关键词：x70管线钢；焊接接头热影响区；冷丝埋弧焊；过热损害；最佳冷丝填充速度 [gap=686]Key words：XTO pipeline steel；welded joints hem-a11．ted gone；cold wire submerged arc welding；overheating dama..
基于1个网页-相关网页
短语
x70管线钢的
x line pipe
国产X70管线钢
domestic X70 pipeline steels
国产x70管线钢
domestic pipeline steel x
;
domestic x pipeline steels
X70级管线钢
X70 grade pipeline steel
x70级管线钢
x grade pipe steel
;
grade x line pipe steel
X70级管线钢管
X70 pipeline steel pipe
-
x70 pipe steel
x70 pipeline steel
·2,447,543篇论文数据，部分数据来源于NoteExpress