B 开头单词

backing-up n. 倒车；[建] 里壁砖；印反面

backing-out system 补偿系统

backing-out punch 冲床

backing-out 列车退行

backing-off lathe 铲齿车床

backing-off cutting 铲削

backing-off attachment [机械工程]铲齿装置

backing-off 铲,退绕

backing-mixing 返混

backing wind 逆转风

backing welding electrode [机械工程]底层焊条

backing welding 打底焊

backing weld 用垫环的焊缝；[机] 底焊焊缝；打底焊道

backing vacuum pump [物理学]前级真空泵

backing up device [计算机科学技术]备份设备

backing up 回投；封底焊

backing tape [计] 磁带基

backing structure [交通运输工程]垫衬结构

backing store [计] 后备存储器；存储器回填；辅助存储器；将存储备份

backing side trap [医药科学]前级冷阱