英语词汇“draining gas before mining coal”的翻译、意思、用法、释义-英汉汉英双解词典

词汇	draining gas before mining coal
释义	draining gas before mining coal 先抽后采
随便看	pinion-and-rack steering gear Pinion-and-rack steering system pinion and ring gear pinion and ring gears pinion assembly of truck pinion axial displacement pinion barrel pinion bearing pinion bearing spacer pinion blank Pinion bush for fuel control pinion cage pinion carrier pinion cone pinion cover pinion cuter pinion cutter pinion cutting machine pinion drive pinion drive shaft pinioned pinionfile pinion file pinion-file pinion flange