weld with backing strip_新英汉石油技术词典
weld with backing strip
[新英汉石油技术词典]
weld with backing strip背面垫板条焊接
是什么意思，weld with backing strip的解释，weld with backing strip的翻译
[石油英汉词典] weld with backing strip
背面垫板条焊接
weld with backing strip_新英汉石油技术词典weld with backing strip
[新英汉石油技术词典]
weld with backing strip是什么意思，weld with backing strip的解释，weld with backing strip的翻译
[石油英汉词典] weld with backing strip
