senna 山扁豆
Senna 生那牌手表
sense amplifier 读出放大器
sense finder 无线电罗盘
senser 传感器
sensibilizer 敏化剂
sensicon 光导摄像管
sensillometer 感光计
sensing cable 传感电缆
sensing head 传感头
sensitimeter 感光器
sensitive bench drill 高速手压台钻
sensitive bolometer 灵敏测辐射热计
sensitive drill press 灵敏钻床
sensitive drill 精式钻床
sensitive film 感光胶卷
sensitive galvanometer 灵敏电流计
sensitive gas alarm 燃气灵敏报警器
sensitive glue used for printing and dyeing 印染感光胶
sensitive microrelay 微型灵敏继电器
sensitive mini-relay 小型灵敏继电器
sensitive paper 感光纸
sensitive polarized relay 灵敏极化继电器
sensitive receiver 灵敏接收机
sensitive relay 灵敏继电器
sensitive switch 传感开关
sensitive thermometer 灵敏温度计
sensitivity amplifier 灵敏度放大器
sensitivity compensator 灵敏度补偿器
sensitized paper 感光纸
sensitized plate for offset printing 胶印用感光板
sensitizer 敏化剂
sensitizing dye 增感染料
sensitometer 感光计
sensor alarm 传感报警器
sensor amplifier 传感放大器
sentinel pyrometer 监测高温计
separable electric connector 分离电连接器
separable fastening fabric 尼龙搭扣
separable zipper 分离式拉链
separate confinement laser diode 分别限制激光管
separate excited motor 分激电动机
separate exciter 独立励磁机
separate nozzle gas cutter 串列式喷嘴气割机
separate skirt 裙裤
separate Stirling cycle refrigerator 分置式斯特林循环制冷机
separate valve box type piston pump 独立阀箱式活塞泵
separate VM cycle refrigerator 分置式威勒米尔循环制冷机
separated multiclad laser 分离多包层激光器
separately excited generator 他激发电机
separately excited induction generator 分激感应式发电机
separately excited inverter 分激式变流器
separately excited machine 他激电机
separately excited motor 他励电动机
separately excited oscillator 分激振荡器
separately excited phase advancer 分激式进相机
separately fired superheater 独立燃烧式过热器
separately ventilated machine 外通风式电机
separating cone 圆锥形分选机
separating filter 分色滤光镜
separating funnel 分液漏斗
separating prism 分像棱镜
separating screen 选分筛
separating solution 分离剂
separating valve 隔离阀
separating zipper 开尾拉链
separation coal 精选煤
separation filter 分向滤波器
separation indicator 分离指示器
separation orifice 分离孔板
separation sensor 分离传感器
separation sieve 分离筛
separation tank 隔油池
separation type iron reinforcement grit roller rice mill 分离式铁筋砂辊辗米机
separation vessel 分离容器
separator conveyer 筛分运输机
separator 分离器
separatory funnel 分液漏斗
sepiolite 海泡石
septal elevator 鼻中隔剥离器
septatome 鼻中隔刀
Septene 西维因
septum forceps 鼻中隔钳
septum gouge 鼻中隔圆凿
septum mucosa depessor 鼻中隔粘膜压迫器
septum mucosa raspatory 鼻中隔粘膜剥离器
septum mucosa spatula 鼻中隔粘膜压板
septum operating instrument set 鼻中隔手术刀包
septum retractor 鼻隔拉刀
septum straightening forceps 鼻中隔纠正钳
sequence control counter 程序控制计数器
sequence control register 顺序控制寄存器
sequence controlled computer 程序控制计算机
sequence controller 程序控制器
sequence generator 程序发生器
sequence switch 程序开关
sequence valve 顺序阀门
sequencer 序列发生器
sequential access memory 按序存取存储器
sequential analyzer 序列分析器
sequential draw texturing machine 顺序拉伸变形机
sequential multielement analyzer 多元素顺序分析仪
sequential relay 程序继电器
sequoia 红杉
Seraceta 瑟拉西塔醋酯长丝
Seracour 塞拉考尔醋酯膨体纱
seractide 丝拉克肽
Serafume 熏仓混剂
serapi rug 西腊比地毯
Serebon tablet 施宁本片
Serecor capsule 赛利科胶囊
Serena 山列娜牌照相机
Serene 赛雷尼聚酯长丝和短纤
serge canvas 小方块纹哔叽
serge cloth 哔叽呢
serge d'aumale 奥玛尔里子呢
serge de berry 厚梳毛哔叽
serge de Rome 罗马薄哔叽
serge de soie 丝哔叽
serge double cloth 双层丝哔叽
serge moiré 波纹丝哔叽
serge twill 斜纹布
serge yarn 哔叽毛纱
serge 哔叽
sergine 丝哔叽
serging machine 锁边缝纫机
Seria 塞里阿聚酯纤维
serial accumulator 串行累加器
serial binary computer 串行二进制计算机
serial capacitor 串联电容器
serial computer 串行计算机
serial data transmitterreceiver 串行数据发送机接收机
serial digital computer 串行数字计算机
serial dot matrix printer 串行点阵打印机
serial dot printer 串行点式打印机
serial impact dot matrix printer 串行点矩阵击打式打印机
serial multiplier 串行乘法器
serial printer 串行打印机
serial products of C band satellite TV receiving station C波段卫星电视地面站系列产品
serial products of natural pigments 天然色素系列产品
serial register 串行寄存器
serial regulator 串联调节器
serial satellite television ground receiving station 系列卫星电视地面接收站
serial storage 串行存储器
serial-contactor 串动接触器
serial-parallel switch 串并联开关
sericin 丝胶
sericite in lump 绢云母块
sericite in powder 绢云母粉
sericite 绢云母
series board 串联复式交换机
series booster regulator 串联升压机调节器
series booster 串联升压机
series capacitor 串联电容器
series commutator motor 串励换向器电动机
series condenser 串联电容器
series dynamo 串激发电机
series equalizer 串联均衡器
series feedback amplifier 串联反馈运算放大器
series flow turbine 串流式涡轮机
series friction screw press 系列摩擦压力机
series generator 串联发电机
series guillotine shears 系列剪板机
series limiter 串联限幅器
series machine 串行计算机
series motor 串激电动机
series nature medicine cosmetic products for skin protection 天然药物系列护肤美容品
series of hydraulic forging press 系列锻造水压机
series over-current relay 串联过电流继电器
series parallel controller 串并联控制器
series parallel motor 串并激电动机
series parallel starter 串并联换接起动器
series parallel switch 串并联开关
series pneumatic hammer 系列空气锤
series printer 串行式印刷机
series reactor 平滑扼流圈
series regulator 串联调节器
series resistance lamp 串联电阻灯
series resistor 串联电阻器
series shift register 串行移位寄存器
series straight-side single-point press 系列闭式单点压力机
series transductor 串联饱和电抗器
series transformer 串联变压器
series voltage regulator 串联稳压器
series winding 串联绕组
series wound dynamo 串联磁电机
series wound motor 串绕电动机
series-compensated amplifier 串联补偿放大器
series-excited radiator 串激天线
series-feed oscillator 串馈振荡器
series-matching resistor 串联匹配电阻器
series-repulsion motor 串联推斥电动机
series-type limiter 串联式限幅器
series-type phase advancer 串联式相位补偿器
serimeter 验丝计
serine 丝氨酸
Seris 塞里斯聚酯纤维
sermetacin 丝美辛
sermion tablet 脑通片
sero-albuminum humanum 人血清白蛋白
Seronge cotton 塞龙基棉
serpeggiante 木纹黄石
serpentine asbestos 蛇纹石石棉
serpentine cooler 蛇管冷却器
serpentine crepe 蛇纹绉
serpentine marble 蛇纹岩
serpentine pipe 螺旋管
serpentine 蛇纹石
serrapeptass 沙雷肽酶
serrasoid modulator 锯齿波调制器
serrated knife 齿刀
serration broach 细齿拉刀
serration gauge 花键廓量规
serration hob 细齿滚铣刀
serration shaft 锯齿形花键轴
Sertao cotton 塞陶棉
Seru 薄哔叽
serum bottle graduated 有刻度血清瓶
serum bottle plain 无刻度血清瓶
serum coagulator 血清凝固器
serum gonadotrophin 马血促性素
serum 血清
servant brake 伺服闸
service cap 军帽
service dress 制服
service elevator 服务梯
service gauge 维修压力计
service machine 工作机
service meter 通话计次器
service oscillator 测试振荡器
service pump 备用泵
service rifle 军用步枪
service rig 修井钻机
service serge 军服哔叽
service stockings 厚型丝袜
service weight hosiery 耐磨袜子
service weight stockings 耐磨袜子
serviceable chest 多用柜
servicillin vial 注射用沙维西林
serviette tissue 餐巾纸
serviette 餐巾
serving fork 公用叉
serving spoon 公用匙
serving trolley 送食品的台车
servo altimeter 伺服高度计
servo amplifier 伺服放大器
servo analog computer 伺服模拟计算机
servo analyzer 伺服分析器
servo brake 伺服制动器
servo cascade controller 伺服串级调节器
servo function generator 伺服函数发生器
servo generator 伺服发电机
servo integrator 伺服积分器
servo manometer 伺服压力计
servo mechanism 伺服机构
servo modulator 伺服调制器
servo motor 伺服电动机
servo multiplier 伺服乘法器
servo piston 伺服活塞
servo potentiometer 伺服电位计
servo pump 伺服泵
servo recorder 伺服记录器
servo relief valve 伺服安全阀
servo scope 伺服显示器
servo simulator 伺服模拟机
servo tab 伺服调整片
servo valve 伺服阀
servo-controlled rod 伺服机构控制棒
servo-operated valve 伺服控制阀
servocontrol accelerometer inclinometer 伺服控制加速度计式数显测斜仪
sesame and peanut cake 芝麻明酥
sesame ball cake 麻球酥
sesame butter 芝麻酱
sesame cake 芝麻酥
sesame candy 芝麻酥糖
sesame coated yolk crisp bar 蛋黄酥
sesame crisp flake 麻薄酥
sesame egg biscuit 芝麻香酥
sesame egg crisp 麻蛋酥
sesame egg oblong 芝麻香条
sesame filled cake 麻心酥
sesame flake 芝麻片
sesame honey crunch 芝麻脆糖
sesame oil 麻油
sesame paste 芝麻酱
sesame peanut mixed cake 麻块酥
sesame piece cake 酥麻片
sesame seed cake 芝麻饼
sesame seed candy 芝麻糖
sesame seed meal 芝麻粕
sesame seed oil 芝麻油
sesame seed 芝麻
sesame slice 芝麻片
sesame 芝麻
sesame-flavoured cracker with cream and egg 麻蓉奶油蛋酥
sesame-seed paste-powder 芝麻糊
sesame-seed powder 芝麻糊粉
sesame-seed slice 芝麻片
sesamex 增效菊
sesamolin 芝麻啉
sesamum indicum L. 茺蔚子
sesbania gum powder 田菁胶粉
sesbania gum 田菁胶
Sesine 赛信
sesone 2
set lotion 梳整水
set of fork spanners 成套叉形扳手
set pin sleeve 定位销套
set screw piston pin 固定螺钉式活塞销
set screw 定位螺丝
set square 三角尺
set yarn 假捻变形膨体纱
seta 生丝
setazindol 司他秦多
Setra Communal 塞特拉-社区牌汽车
Setra Imperial 塞特拉-帝国牌汽车
Setra International 塞特拉-国际牌汽车
Setra Regional 塞特拉-地区牌汽车
Setra Royal 塞特拉-皇家牌汽车
Setra 塞特拉牌汽车
Setrete 醋酸苯汞铵
settee 长靠椅
setting accelerator 促凝剂
setting agent 硬化剂
setting elevator 铲车
setting lotion 卷发剂
setting machine 码坯机
setting rule 排字尺
setting-out machine 伸展机
settingstick 排字盘
settler 澄清器
settling classifier 沉降分级机
Sevel Peugeot 塞韦尔-标致牌汽车
Seven Star dermal needle 七星皮肤针
seven-eights hose 中统运动袜
seven-stage laser 七级激光器
seven-stand forming mill 七机座成形机
seven-stringed Chinese harp 七弦琴
Seven-Up 七喜牌汽水
Sevilla cotton 塞维利亚棉
seville orange flower 代代花
Seville 塞维尔牌汽车
Sevimol 西维因
Sevin 西维因
Sevithion 西甲混剂
sevoflurane 七氟烷
Sevron dye 塞夫隆染料
sew-knitting machine 缝编机
sewage disposal technology 污水处理技术
sewage pulverizer 污物粉碎机
sewage pump 污水泵
sewage-treatment unit control box 污水处理装置控制箱
sewerage dredger 挖沟机
sewing box 针线盒
sewing cotton thread 缝纫棉线
sewing cotton 缝纫棉线
sewing machine & spare parts 缝纫机及零件
sewing machine head 缝纫机头
sewing machine needle 缝纫机针
sewing machine oil 缝纫机油
sewing machine stand 缝纫机架
sewing machine table 缝纫机台板
sewing machine with 3-drawers and folding cover 三斗折式缝纫机
sewing machine with 3-drawers and plastic flat cover 三斗塑料平板缝纫机
sewing machine with rectangular cabinet 长方柜缝纫机
sewing machine with square cabinet 方柜式缝纫机
sewing machine 缝纫机
sewing needle 手缝针
sewing scissors 缝纫剪
sewing silk yarn 缝纫丝线
sewing thread and yarn 缝纫纱线
sewing thread on cone 宝塔线
sewing thread 缝纫线
sewing-press 锁线机
sexoton pill 金匮肾气丸
sextant 六分仪
SF6 circuit-breaker 六氟化硫断路器
sha hsien chin ointment 杀癣净软膏
shabnam 沙布南薄纱
shabri 白色或银灰羊绒
shackle bolt 钩环螺栓
shackle insulator 茶托绝缘子
shackle pin 钩环销
shackle 钩环
Shackman 歇克曼牌照相机
shad 鲱鱼
shaddock 柚子
shaded pole motor 罩极电动机
shaded windscreen 着色挡风玻璃
shaded windshield 着色挡风玻璃
shaded yarn 杂色纱线
shading compensator 黑斑补偿器
shading ring 隐蔽环
shading-pole type relay 屏蔽磁极式继电器
shadow cretonnes 双面影纹花布
shadow embroidery 暗花绣花
shadow lace 暗花细花边
shadow mask type colour tube 荫罩式彩色显象管
shadow microscope 阴影显微镜
shadow organdy 印花薄纱
shadow photometer 比影光度计
shadow rep 深浅色棱纹布
shadow silk 闪光绸
shadow stitch 暗花刺绣
shadow stripe crepe 月华绉
shadow striped taffeta 影条纺
shadow work embroidery 泡花平绣
shadow-stripe viole 影条巴里纱
shadow-tuning indicator 阴影调谐指示器
shadowgraph X射线照片
shadowless lamp with nine reflectors 九孔无影灯
shadowless lamp 无影灯
shadowless operating lamp 无影手术灯
shaft alley pump 轴隧排水泵
shaft angle encoder 轴角编码器
shaft bauxite 竖炉矾土
shaft bearing 轴承
shaft bush 轴承衬
shaft clip 轴箍
shaft collar 轴环
shaft cooler 竖式冷却器
shaft coupling 联轴节
shaft encoder 轴头编码器
shaft furnace 竖炉
shaft gear 主轴齿轮
shaft generator 轴传动发电机
shaft governor 轴速调整器
shaft kiln multi-inlet feeder 竖窑多点上料机
shaft lever 轴杆
shaft locking sleeve 锁轴套
shaft seat 轴座
shaft sleeve 轴套
shaft stop 轴挡铁
shaft stopping pin 轴挡销
shaft 轴
shaft-flow pump 轴流泵
shaft-well digger 竖井挖掘机
shaft-well drill 竖井钻机
shaftless electric pump 无轴式电动泵
shafty wool 长而可纺性好的羊毛
shag 长绒
shag-o-lon 吐波式集束纺聚丙烯腈纱
shah-nashin 什纳欣棉毯
shah-tush wool 白色或银灰羊绒
shairi 莎里羊绒细呢
shakeout machine 振动落砂机
shakeproof corrugated paper board 防震瓦楞纸板
shaker conveyer 震动运输机
shaker flannel 双面法兰绒
shaker sweater 厚运动衫
shaker 振动器
shaking mixer 摇动混合机
shaking screen 振动筛
shaking sieve 摇筛
shal 谢尔全丝内衣绸
shala-phiri 沙拉菲里披巾
shalamar tweed 谢拉马斜纹粗花呢
shale shaker 振动泥浆筛
shallow and weak current meter 浅水低流速仪
shallow cooking bottom 浅底锅
shallow drilling-boring-milling machine 浅孔钻铣镗床
shallow submarine cable 浅海海底光缆
shallow water cable 浅水水底光缆
shallow well multi-stage jet pump 浅井多级喷射泵
shallow well pump 浅井泵
shallow-draft barge 浅吃水驳船
shallow-pocket free settling classifier 浅室型自由沉降分级机
shallow-water precision echosounder 浅水精密测深仪
Shalon 谢纶聚苯乙烯纤维
sham plush 假长毛绒
shameuse 留香绉
shammy fabric 充麂皮针织物
shammy gloves 充麂皮手套
shammy 麂皮
shamoy 羚羊皮
shampoo agent 洗发剂
shampoo basin 洗头盆
shampoo detergent 洗发剂
shampoo liquid 洗发水
shampoo powder 洗头粉
shampoo soap 洗头皂
shampoo tea-seed extract 茶籽精洗发精
shampoo tray 仰卧式洗头盘
shampoo with pearl-radiation 珠光洗发水
shampoo with treatment 调理洗发水
shampoo 洗发剂
shamrock 沙姆罗克高级细布
Shan cotton 掸棉
shanbei paper 山贝纸
shangai 优质柞丝绸
shank drill set 套装柄钻
shank milling cutter 柄式铣刀
shank pinion cutter 带柄插齿刀
shank type fraise 带柄铣刀
shank with driving slot 带卸刀槽的刀柄
shank with driving square 带驱动方头的刀柄
shank with groove 沟槽刀柄
shank with half tang 半尾刀柄
shank with special flat 特殊平台刀柄
shank with square tang 方尾刀柄
shank with tang and keyway 扁尾键槽刀柄
shank with tang and woodruff keyseat 扁尾月牙键槽刀柄
shank with threads for draw bar 拉杆螺纹刀柄
shank with whistle notch 哨形凹槽刀柄
shank with woodruff keyseat 月牙键槽刀柄
shank 手柄
shantura polyester 涤纶仿山东茧绸
shape cloth 精纺全毛呢
shape cutting machine 成型切割机
shape mill 异形材轧机
shape steel 型钢
shape-faced 棉背真丝天鹅绒
shaped beam antenna 成形波束天线
shaped roll 型钢轧辊
shaped underwear 成形针织内衣
shaped wire 异形钢丝
shaper amplifier 脉冲整形放大器
shaper chuck 牛头刨虎钳
shaper 成形机
shaping and planing machine 刨床
shaping machine 牛头刨床
shaping mill 成型机
shappe 绢丝
sharak 沙拉克密织缎条细布
share plough 锋式犁
shark meat 鲨鱼肉
shark oil 鲨鱼肝油
shark 鲨鱼
shark's fin 鱼翅
shark-flesh paste 鲨肉酱
sharkskin 雪克斯金细呢
sharp freezer 快速冻结机
sharp teeth profile milling cutter 尖齿铣刀
Sharp 夏普牌电器
sharpened slate pencil 削尖石笔
sharpener 磨刀器
sharpening device 刻石器
sharpening machine 修磨机
sharpening stone 磨石
sharpie 平底轻帆船
sharpy 平底轻帆船
shash mantahi 莎什羊绒方巾
shash 优质棉细布
shaub 肖布丝棉交织绸
shaving board and attaching veneer 刨花板及贴面
shaving board 刨花板
shaving brush 须膏刷
shaving case 剃须盒
shaving cream 修面膏
shaving cup 剃胡杯
shaving machine 剃齿机
shaving mirror 刮脸镜子
shaving preparation 刮脸制剂
shaving soap 剃须皂
shaving stone 刮面石
shavings exhauster 废屑排除器
shawl collar extra heavy wool sweater 斜领式特厚羊毛衫
shawl wool 山羊绒
shawl 披巾
Shaxi paper 沙溪纸
sheaf-binding machine 捆扎机
sheaf-binding reaping machine 收割打捆机
shear blade sharpening machine 剪切刀片磨床
shear cutting blade sharpening grinding machine 剪切刀片刃磨床
shear gauge 定尺机
shear mill 剪切磨机
shear steel 剪刀钢
shear welder 剪切-焊接机组
sheared & designed sheep skin plate 剪绒挖花绵羊皮褥子
sheared plate mill 切边中厚板轧机
sheared sheep skin cap for woman 剪绒羊皮女帽
sheared sheep skin cushion 剪绵羊绒皮靠垫
sheared sheep skin hat for man 剪羊毛绒皮男帽
sheared sheep skin plate 剪绵羊绒褥子
sheared sheep skin 剪绒羊皮
sheared towel 割绒毛巾
shearer 滚齿刨煤机
sheargraph 剪切力记录仪
shearing crocodile machine 杠杆式剪断机
shearing cylinder 剪切圆筒
shearing equipment 剪切设备
shearing interferometer 错位干涉仪
shearing machine 直槽式截煤机
shearing press 剪断机
shearing strainmeter 剪应变计
shearling collar slide leather boots 毛绒领拉链高面皮鞋
shearometer 剪切力测定仪
shears for iron bar 铁棒剪切机
shears 剪板机
sheath skirt 直身裙
sheath 外鞘
sheath-core bicomponent fibre 皮芯型双组分纤维
sheath-core yarn 皮芯丝
sheathed cable 铠装电缆
Shed-A-Leaf 氯酸钠
sheen gabardine zip-lined coat 丝光华达呢拉链衬里大衣
sheen gabardine 光亮轧别丁
sheen-finished rug 丝光地毯
sheen-type rug 有光地毯
sheep fleece 套毛
sheep leather bush coat 羊皮猎装
sheep leather for making gloves 绵羊手套革
sheep leather for making overcoat 绵羊大衣革
sheep leather police tunic 羊皮警服
sheep leather 绵羊革
sheep lining leather 绵羊皮里革
sheep pelt 羊皮
sheep shearer 剪羊毛机
sheep shears with heart-shaped spring 心形弹簧羊毛剪
sheep suede leather for garments 绵羊皮各色反绒服装革
sheep wool and goat hair rug 山绵羊毛混纺地毯
sheep wool shears 羊毛剪刀
sheep wool 绵羊毛
sheep 绵羊
sheep's wool hand-made knotted carpet 羊毛手工打结地毯
sheep-foot roller 羊蹄压路机
sheep-foot tamper 羊脚形压路机
sheep-horn roller 羊角碾
sheepgoat leather of hand bag 山绵羊手袋革
sheeplined horsehide surcoat 羊毛衬里马皮外衫
sheeplined leather vest 羊皮衬里皮背心
sheeplined moleskin finished cotton vest 羊皮衬里田鼠皮状之棉布背心
sheeplined work coat 羊皮衬里工作外衫
sheepskin ankle boots 羊皮短靴
sheepskin goggle helmet 配眼罩的羊皮飞机帽
sheepskin leather cap 熟羊皮便帽
sheepskin leather moccasins 羊皮软鞋
sheepskin leather shoes 羊皮鞋
sheepskin leather utility cap 常用羊皮便帽
sheepskin lining leather 羊里皮
sheepskin parka for child 绵羊皮童皮猴
sheepskin parka for lady 绵羊皮女皮猴
sheepskin parka for man 绵羊皮男皮猴
sheepskin 绵羊毛皮
sheepwool waste 废绵羊毛
sheer crepe 透明绉
sheer fabric 薄纱
sheer gabardine 稀薄轧别丁
sheer linen handkerchief 竹丝布手帕
sheer linen 细薄亚麻布
sheer muslin 薄纱
sheer nylon blousette 尼龙纱小上衣
sheer nylon socks 尼龙丝袜
sheer silk satin 薄缎
sheer stockings 透明长袜
sheer stretch hosiery with polyamide 薄型锦纶弹力丝袜
sheer sucker 绉纱
sheer taffeta 稀薄塔夫绸
sheer white dimity 细白光柳条布
sheer wool 精纺羊毯薄呢
sheer 透明薄纱
sheet and kieselguhr filter 板框硅藻土过滤机
sheet and tube condenser 盘管套片式冷凝器
sheet and tube evaporator 盘管套片式蒸发器
sheet bar mill 薄板坯轧机
sheet bar shears 薄板坯剪切机
sheet bar stacker 薄板坯垛放机
sheet calender 平板纸压光机
sheet classifier 薄钢板分选机
sheet control 纸张控制器
sheet copper 紫铜板
sheet cotton 筵棉
sheet counter 数纸器
sheet counting device 数纸器
sheet curtain 薄窗帘布
sheet cutter 切片机