2026-03-21 23:20 浏览次数 31
石油鉆桿
Specification of Oil Drill Pipe
石油鉆桿规格
Design and Testing of Technological Process for End-upsetting of Oil Drill Pipe
石油鉆桿管端加厚工艺过程设计与试验
Analysis of Cracking of Oil Drill Pipe
石油鉆桿裂纹分析