查询词典 back-up

open back double action drawing press：后开式双动拉伸压力机

open back deep throat press 后开式深喉口压力机 | open back double action drawing press 后开式双动拉伸压力机 | open back inclinable mechanical press 后开式可倾机械压床

a back answer：顶嘴

a back answer 顶嘴 | a back issue 过期期刊 | a back number 过期的刊物

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

back balance：配重

back azimuth 反方位角 | back balance 配重 | back bead 封底焊道

back balance：平衡器

back axle 后轴 | back balance 平衡器 | back bridge relay 反桥接继电器

back balance：后平衡,轮子坡,平衡锤,平衡块,平衡重

back azimuth ==> 反方位角 | back balance ==> 后平衡,轮子坡,平衡锤,平衡块,平衡重 | back band ==> 背圈

back bar：后杆

"往复运动","back and forward motion" | "后杆","back bar" | "经轴;后梁","back beam"

back bar：(石工中的)水平吊杆 (炮车)后扶手

back band || 背圈 | back bar || (石工中的)水平吊杆 (炮车)后扶手 | back beach || 滨后滩

back side grid bar：后尘棒

"后导梭板","back shuttle guide" | "后尘棒","back side grid bar" | "底毛圈","back side loop"

back beam：後射波束

"back azimuth","反方位角" | "back beam","后射波束" | "back bearing","反方位"

Hadrian Wall：哈德 城墙 / 哈德 城墙

Hadden-Cave, Philip 夏鼎基 | Hadrian Wall 哈德 城墙 / 哈德 城墙 | Haeckel, Ernst 海克尔

skilled：熟练的

skill 技能 | skilled 熟练的 | skillet 煮锅