查询词典 double back

double-tongued：一口两舌的/欺骗的

double-time /跑步/ | double-tongued /一口两舌的/欺骗的/ | double-track /使成双轨/

double-track cam：双面凸轮

double-track 双线,双轨 | double-track cam 双面凸轮 | double-track sliding door 双轨推拉门

double-track running：雙線行車

3153 double-track railway 雙線鐵路 | 3154 double-track running 雙線行車 | 3155 double-track semiautomatic block 雙線半自動閉塞

double-track insert：雙線橋入段

3147 double-track bridge 雙線橋 | 3148 double-track insert 雙線橋入段 | 3149 double-track line 雙線鐵路;雙線線路;雙軌鐵路;雙軌鐵路

double-u groove weld：双U形槽焊接

双丁沟焊接 double-J groove weld | 双U形槽焊接 double-U groove weld | 双V形槽焊接 double-V groove weld

double-u groove weld：双U形槽熔接

"double U groove","双U形槽" | "double U groove weld","双U形槽熔接" | "double U-leather packing","双U形皮填料"

double-u groove weld：双面U形坡口焊缝

double U 双面U形坡口 | double U groove weld 双面U形坡口焊缝 | double V butt joint X形对接接头

double-U butt weld：双U形对接焊

double-J groove weld | 双J形槽焊 | double-U butt weld | 双U形对接焊 | double-U groove | 双面U形坡口

double-U but joint：双U形对接

双夹接头;双面搭板接合 double strapped joint | 双U形对接 double-U but joint | 双U形槽{熔焊} double-U groove

double pump：双联泵

double pulse nanosecond oscillator 双脉冲毫微秒振荡器 | double pump 双联泵 | double punching machine 复式冲压机

air ventilator：通风管

air purifier 空气滤清剂 | air ventilator 通风管 | air-bleed 空气分泄器

sound motion picture, talkie：有声电影

silent cinema, silent films 无声电影 | sound motion picture, talkie 有声电影 | cinemascope, CinemaScope 西涅玛斯科普型立体声宽银幕电影,变 形镜头式宽银幕电影