杆菌肽 bacitracin
后轴 back axle
平衡器 back balance
反桥接继电器 back bridge relay
印花衬布 back cloth
背锥 back cone
背面连接式仪器 back connection type instrument
反馈耦合振荡器 back coupling oscillator
靠垫 back cushion
反铲挖土机 back digger
逆弧检测继电器 back firing detective relay
明铰链 back flap hinge
后轴 back axle
平衡器 back balance
反桥接继电器 back bridge relay
印花衬布 back cloth
背锥 back cone
背面连接式仪器 back connection type instrument
反馈耦合振荡器 back coupling oscillator
靠垫 back cushion
反铲挖土机 back digger
逆弧检测继电器 back firing detective relay
明铰链 back flap hinge
倒挡齿轮 back gear
背齿轮轴 back gear shaft
带减速齿轮的电动机 back geared motor
带齿轮立式钻床 back geared upright drill press
印花衬布 back grey
反向铲 back hoe
后灯 back light
后连杆 back link
后视镜 back mirror
后螺母 back nut
背负式发射机 back pack transmitter
后襞褶裙 back pleated skirt
背压抽气式汽轮机 back pressure extraction turbine
背压调节器 back pressure regulator
背压安全阀 back pressure relief valve
背压式汽轮机 back pressure turbine
反拉力拉丝机 back pull wire drawing machine
背面反射X射线照相机 back reflection X-ray camera
靠背椅 back rest chair
缎背华达呢 back satin gabardine
缎背哔叽 back satin serge
镶边手锯 back saw
平背锯片 back saw blade
塑柄手锯 back saw with plastic handle
木柄手锯 back saw with wooden handle
反向散射仪 back scatter
反射型β射线测厚计 back scatter beta gauge
反散射电子检测器 back scattered electron detector
后轴 back shaft
反铲 back shovel