英语词汇“protective gas”的翻译、意思、用法、释义-英汉双解词典-注文网

单词	protective gas
释义	protective gas 保护气体
随便看	oil well casing oil-well cement oil well cement oil well derrick oil well drilling oil well drive oil-well drive oilwell flow index oil well gas anchor oilwell paraffin prevention oil well paraffin removal equipment oilwell performance oil well pipe oil well pipe thread oil well potential test oil well pressure oil-well pump oil well pump oil well pumping method oilwells oil wells oil-wells oilwell safety equipment oil well sand anchor oil well sand removal 笑不离脸，心里揣把刀笑中有刀，(柔而害物)。笑吟山色同敧枕，暗辨桐声自作琴。笑在脸上，苦在心里笑在面上，苦在心里笑多了没喜笑官打死人笑容可掬，和蔼可亲笑容满面，喜气洋洋笑开一面红粉妆，东园几树桃花死。如左右手如常如弟如影随形如律令如心如意如意算盘如意草如愿