Working principle and structural features of SYZX 75 wire - line coring hydro - hammer are presented.介绍了SYZX75型绳索取心液动潜孔锤的工作原理及结构特点.A worker's arm was injured whilst operating a concrete coring machine.工人在操作混凝土钻孔机时引致...
我不会擅自批评奥斯本恨他妈妈这件事。I would not presume to censure Osborne for hating his mother.她特意尽可能地不呆在奥斯本庄园。She made a point of spending as much time as possible away from Osborne House.“ 我不打算去巡回演出, " 奥斯本小姐说." I'm not going out ...