entire wellhead installing
... 整体底板 solid base 整体吊装法抢装井口 entire wellhead installing 整体法兰 integral type flange ...
基于8个网页-相关网页
whole hanging method for installing wellhead
整体吊装法抢装井口whole hanging method for installing wellhead 带帽子压井法·hatting kill well method ..
基于6个网页-相关网页