备用泵 meaning in English
appendage pump
backer pump
before and after pump
emergency pump
jury pump
reserv pump
reserve pumps
reserved pump
service pump
spare pump
stand by pump
tand-by pump
Examples
- Number of pumps installed ( duty and standby ) , and their pumping capacity
已安装水泵(主水泵和备用泵)的数目和泵水量；