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back ground noise level：背景噪音电平

back gear 背轮 | back ground noise level 背景噪音电平 | back guide 倒车导板

back hand rope：反搓绳

back guide 倒车导板 | back hand rope 反搓绳 | back hand 反向

to back credit import first：输入为先的对开信用证

to back credit export first ==> 输出为先的对开信用证 | to back credit import first ==> 输入为先的对开信用证 | to back L-C ==> 背对背信用证

Don't go whingeing to your mother. Now get back up, you bloody sook：别去找你妈妈哭鼻子 上来,你这个胆小鬼

CLIFF: Aaah! Get back!|... | Don't go whingeing to your mother. Now get back up, you bloody sook!|别去找你妈妈哭鼻子 上来,你这个胆小鬼! | You'll never be a real bull rider if you don't get back up, Cli...

back office force：内勤人员

back off compensate ==> 补偿 | back office force ==> 内勤人员 | back order ==> 返回次序,欠交订货,延迟交货,延期交货

Back Segs：后面片段数

Back Length后面长度 | Back Segs后面片段数 | Back View背视图

back rashers：薄的腌(或熏)肉片

back pressure 反压 | back rashers 薄的腌(或熏)肉片 | back side 胴体 后部

back-reflection pinhole camera：背面反射针孔照像机

back-reflection focusing came 背面反射聚焦照像机 | back-reflection pinhole camera 背面反射针孔照像机 | back-reflection x-ray exami 背面反射

back pressure multi-effect evaporator：反压多效蒸发器

反压蒸发[法] back pressure evaporation | 反压多效蒸发器 back pressure multi-effect evaporator | 反滴定 back titration

back pressure spring valve：背压弹簧阀

back pressure relief valve 背压安全阀 | back pressure spring valve 背压弹簧阀 | back pressure test 背压试验

White Mustard Seed Extract：白芥子提取物

Cherokee rose fruit extract 金樱子提取物 | White Mustard Seed Extract白芥子提取物 | Chinese Dodder Seed Extract 菟丝子提取物

snowstorm warning：暴风雪警告

28. weather report 天气报告 | 29. snowstorm warning 暴风雪警告 | 1. shake(名词)_______