header of the gin pole
header of the gin pole
[新英汉石油技术词典]
header of the gin pole天车吊架的横梁,人字架横梁
是什么意思,header of the gin pole的解释,header of the gin pole的翻译
[石油英汉词典] header of the gin pole
header of the gin pole
[新英汉石油技术词典]
header of the gin pole是什么意思,header of the gin pole的解释,header of the gin pole的翻译
[石油英汉词典] header of the gin pole