end upsetting的意思|示意
美 / /
英 / /
end upsetting相关例句
The basic principle and the method of oil drill pipe end upsetting process were presented.
介绍了石油钻杆端部镦锻加厚工艺基本原理及加厚方式.
互联网
The design of non - dig drill pipe end - upsetting product line autocontrol system were introduced in this paper.
介绍了 非 开挖钻杆管端加厚生产线自动控制系统的设计.
互联网