The causes analysis of the welding seam cracking about the main winch drum of Zhongmacun Coal Mine;
中马村矿主井绞车滚筒开焊的原因分析
Narrow-gap submerged arc welding for drawworks drums of drilling rigs;
钻机绞车滚筒体的窄间隙埋弧焊
CopyRight © 2020-2024 优校网[www.youxiaow.com]版权所有 All Rights Reserved. ICP备案号:浙ICP备2024058711号