baby wear 婴儿服

baby wool 婴儿绒线

baby yak skin plate 牦牛犊皮褥子

baby's bath thermometer 婴儿浴水温度表

baby's knitwear 婴儿针织服装

baby's suits 婴儿套装

bacalite 淡黄琥珀

bacampicillin 巴卡西林

Bacardi cocktail 百家地鸡尾酒

Bacardi Rum 百家地郎姆酒

bacaya 巴卡亚阿尔帕卡毛

Bacillus thuringiensis 苏云金杆菌杀虫剂

bacitracin 杆菌肽

back axle 后轴

back balance 平衡器

back bridge relay 反桥接继电器

back cloth 印花衬布

back cone 背锥

back connection type instrument 背面连接式仪器

back coupling oscillator 反馈耦合振荡器

back cushion 靠垫

back digger 反铲挖土机

back firing detective relay 逆弧检测继电器

back flap hinge 明铰链

back gear shaft 背齿轮轴

back gear 倒挡齿轮

back geared motor 带减速齿轮的电动机

back geared upright drill press 带齿轮立式钻床

back grey 印花衬布

back hoe 反向铲

back light 后灯

back link 后连杆

back mirror 后视镜

back nut 后螺母

back pack transmitter 背负式发射机

back pleated skirt 后襞褶裙

back pressure extraction turbine 背压抽气式汽轮机

back pressure regulator 背压调节器

back pressure relief valve 背压安全阀

back pressure turbine 背压式汽轮机

back pull wire drawing machine 反拉力拉丝机

back reflection X-ray camera 背面反射X射线照相机

back rest chair 靠背椅

back satin gabardine 缎背华达呢

back satin serge 缎背哔叽

back saw blade 平背锯片

back saw with plastic handle 塑柄手锯

back saw with wooden handle 木柄手锯

back saw 镶边手锯

back scatter beta gauge 反射型β射线测厚计

back scatter 反向散射仪

back scattered electron detector 反散射电子检测器

back shaft 后轴

back shovel 反铲

back slopper 整坡器

back stripe 缎面斜纹背双重织物

back taper 倒锥

back tenter 小型拉幅机

back view mirror 后视镜

back wash extractor 反萃器

back washing agent 反萃剂

back water pump 回水泵

back wave tube 返波管

back wool 背部毛

back-acting shovel 反铲铲土机

back-bone style arch structure tent 脊骨式拱架帐篷

back-Compton scattering laser 逆康普顿散射激光器

back-contact transistor 背面接触式晶体管

back-coupled generator 反馈振荡器

back-hoe bucket  反铲斗

back-hoe front end loader 后挖前卸式挖装机

back-laced corset 背镶花边的紧身胸衣

back-lining and head banding machine 书脊粘纱布顶带机

back-pack camera 背负式电视摄像机

back-pinched saw 夹背锯

back-projection slide 幻灯片

back-scratcher 背挠

back-to-back diode 背对背二极管

back-up lamp 倒车灯

back-up light 倒车灯

back-up overspeed governor 备用超速保安器

back-wall cell 后壁光电池

backacter 反铲挖掘机

backbreaker 反向断路器

backed stamper 衬板压模

backed up pressure regulating roller leveller 支承压力可调整的辊式矫直机

backed up roller leveller without pressure regulation 支承压力不可调的辊式矫直机

backed up type roller leveller 带支承棍的辊式矫直机

backed-off milling cutter 铲齿铣刀

backer pump 备用泵

backfill rammer 回填夯实机

backfilled printed poplin 单面浆印花府绸

backfilled printed shirting 单面浆印花布

backfilled white sheeting 单面浆印漂布

backfiller 回填机

backfilling bucket 斗式回填机

backflush device 反冲器

background camera 背景摄影机

background loudspeaker 背景扬声器

background screen 背景幕布

backhoe loader 反铲装载机

backing cloth 背衬

backing fabric 底布

backing for abrasives 砂布底布

backing memory 后备存储器

backing paper 背纸

backing pump 前级泵

backing register 后援寄存器

backing yarn 背面经纱

backing-off lathe 铲齿车床

backing-out punch 冲床

backlap tricot 经编手套织物

backlash spring 消隙弹簧

backliner 书脊粘衬机

backpart moulding machine 后跟成形机

backplane 底板

backscatter laser Doppler velocimeter 反向散射激光多普勒测速仪