单词	20}
释义	同20}--calcium{Ca
随便看	casing dog casing elevator casing elevators casing end casing feed system casing fitting casing float collar casing float shoe casing, guide casing hanger casing head casinghead casing head coupling casing head gas casing-head gas casinghead gas casing head gasoline casing-head gasoline casinghead gasoline casinghead gasoline; natural gasoline casing head pressure casing head spool casing hook casing-in casing jack