英语词汇“protective coal seam”的翻译、意思、用法、释义-英汉汉英双解词典-爱贷网

词汇	protective coal seam
释义	protective coal seam 基本例句保护层 The glass window had a protective overcoat applied to it.玻璃窗涂有一层保护层。 All buried lines are coated with a protective covering to save them from corrosion.所有埋设的管道必须涂上保护层，以防生锈腐蚀。
随便看	engagement Memorial engagement model engagement of crew engagement of fetal head engagement of head engagement of lifters engagement of star-wheel engagement of the cutting edge engagement of the vessel engagement of university teachers engagement or employment engagement pair engagement party engagement point engagement principle engagement process engagement range engagement resource engagement ring engagement-ring engagement rings engagement-rings engage oneself in engage oneself to engage oneself to;Be diligent;Apply oneself to