短语词组短语leak indication gas 示漏气体leak gas hunter 检漏器leak gas tester 检漏器leak gas vibroscope 振动测漏计leak gas water 渗漏耗水量leak gas motor pump 防漏式电动泵leak gas test pressure 漏泄试验压力leak gas off connection 放泄接斗leak gas path 漏气通路 返回 leak gas