短语词组短语Blow down gas recovery 排放气体回收blow back gas 后喷气体blow off gas 吹风气soldering blow pipes gas -operated 气动焊接吹管Blow -run gas 鼓风气;翻译recovery of blow gas 吹风气回收blow -out gas 吹除气blow gas expansion tank 吹气膨胀罐 返回 blow gas