查询词典 roach back

back focus：镜后焦点

"后焦距","back focal length" | "镜后焦点","back focus" | "螺丝空挡","back lash"

Back gear：背齿轮

back flash 回火 | back gear 背齿轮 | back kick 回火

Back gear：背轮

back freight 回运货物运费(抵港后无法交货 | back gear 背轮 | back ground noise level 背景噪音电平

Back gear：倒挡齿轮

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 gear shaft：背齿轮轴

back flap hinge 明铰链 | back gear shaft 背齿轮轴 | back gear 倒挡齿轮

back gear ratio：倒擋轉速比

"倒退齿轮,倒挡齿轮,后列齿轮","back gear" | "倒挡转速比","back gear ratio" | "后导板","back guide"

back goods freight：退货费用,退货运费

back gluer 书脊上胶机,胶背机 | back goods freight 退货费用,退货运费 | back gouging 刨焊根,背刨

back goods freight：退货运费

back goods 退货 | back goods freight 退货运费 | back letter 保函

back line：回头缆

back lighting 背面照明 | back line 回头缆 | back lobe 后瓣

back line：背线

\\"背脂\\",\\"back fat\\" | \\"背线\\",\\"back line\\" | \\"回复突变\\",\\"back mutation,reverse mutation\\"

steam trap valve：疏水阀

球阀 ball valve | 疏水阀 steam trap valve | 蛇管式换热器 serpentine type heat exchanger

aldermanship：市政官

aldermanry 议员 | aldermanship 市政官 | Alderney 乳牛