单词	pump-down time
释义	pump-down time 抽空时间
随便看	countings counting scale counting semaphore counting sequence counting series of figure counting-shallow-layer seismograph counting shallow layer seismograph counting slide counting sort counting stage counting statements counting statistic counting statistics counting subroutine counting switch counting system counting technique counting the frequencies counting theorem counting threshold counting time counting tree counting trigger counting tube counting type 披榛采兰披毛戴角披毛求瑕披毛求疵披毛索靥披毛索黡披沙剖璞披沙拣金披沙简金披沥肝胆研ぎ出し研ぎ師研ぎ汁研ぎ澄ます研く 38431 38432 38433 38434 38435