exhaust vent line  排气通气管

non-condensable gas vent line  不凝气线

vent line  排气管线; 排出管线; 排放管线; 导压外引管路; 排气管路; 通气管路

vent line connection  排气管路连接器

water vent line  水箱通气管

vent valve line connection  通风阀管道联接器

vent valves line connection  通风阀管路联接器

Double line-line voltage control  双电压控制

line-line extreme distance  线-线极限距离

line-line topological relation in traffic network  交通网络线-线拓扑关系

on-line line loss  在线线损

loss-free line (=lossless line =lossless transmission line)  无耗损线

SDSL Single-Line Digital Subscriber Line，Single-Line DSL  单绞线数字用户系统; 对称数字用户回路

10-line to 4-line BCD encoder  十进制至8421码编码器

A line used as both sterile and maintaining line  一系两用

agonic line {agonic line of no declination}  无磁差线; 无偏线

cytoplasmic male sterile line CMS-line  质核互作型雄性不育系

double line to line voltages  双电压

double line-to-line voltage control  双电压控制