介绍了非开挖钻杆管端加厚生产线自动控制系统的设计。

The design of non-dig drill pipe end-upsetting product line autocontrol system were introduced in this paper.

youdao

介绍了非开挖钻杆管端加厚生产线自动控制系统的设计。

The design of non-dig drill pipe end-upsetting product line autocontrol system were introduced in this paper.

youdao