单词	源层
释义	源层source bed
随便看	removability removability, as from an office removable removable, as a calamity removable, as from an office removable assembly spreader removable ballast removable bottom removable bottom hole choke removable bottom hole regulator removable canister removable cap removable cementer reniform removable clay matter removable connection removable contaminants removable direct access storage removable discontinuity removable disk removable disk unit removable element removable exhaust riser removable flask molding removable flask molding machine removable graphite blocks