roperties;Safety requirements;Specification (approval);Steel cords;Straps;Types;Underground;Underground mining;Winding ropes【摘要】: 【中国标准分类号】: J81【国际标准分类号】: 53_040_20【页数】: 20P.;A4【正文语种】: 英语 | 欢迎光临 世界资料网论坛 (http://bbs.infoeach.com/) | Powered by Discuz! X2.5 |