查询词典 pumping-back method

back step sequence：退焊顺序;后退熔焊顺序

退焊法;后退熔焊法 back step method | 退焊顺序;后退熔焊顺序 back step sequence | 背托条 backing strap; backing strip

back-angle counter：反向计数器

选择法 back-and-forth method | 反向计数器 back-angle counter | 回吹 backblow

step-back welding：逆向分段焊接; 后向分段焊接

step-back method of welding分段反向焊法 | step-back welding逆向分段焊接; 后向分段焊接 | step-by-step welding步进焊缝; 跨步焊

step-back method of welding：分段反向焊法

step by step seam welding步进式缝焊 | step-back method of welding分段反向焊法 | step-back welding逆向分段焊接; 后向分段焊接

She deserves a pat on the back：(她应该得到表扬. )

16 Good employees get a pat on the back, while good secretaries get a pat on the as... | 17 She deserves a pat on the back.;(她应该得到表扬. ) | 18 Pats on the back weren't enough, he wanted fast cash....

give him a pat on the back：(轻轻拍背部)

see his back (他离开). | give him a pat on the back (轻轻拍背部) | turn your back on somebody (不理睬他人),

back-up air tank：备用气箱

back-up air supply 备用空气源 | back-up air tank 备用气箱 | back-up cooling 备用冷却

back annotation：背面注解

back and design 後端设计 | back annotation 背面注解 | back rack 背後接线架

answer back：回答

answer back code 应答码 | answer back 回答 | answer back 信号回答

answer back mechanism：振铃应答机构, 自动回答机构

answer back key | 应答电键 | answer back mechanism | 振铃应答机构, 自动回答机构anticipation- | answer back | 顶嘴

phenol red：酚红,苯酚磺酞

phenol reagent 酚试剂 | phenol red 酚红,苯酚磺酞 | phenol red test 酚红排泌试验

accessory equipment：附件

accessory equipment 辅助设备 | accessory equipment 附件 | accessory part 附件