expression gas pipeline design  输气管道设计

Pipeline design of oil and gas combination nozzle  油气联合喷嘴的管道设计

acid gas pipeline weld  酸性气体输送管道焊接

American XiaYan gas pipeline  美国夏延输气管道

Buried Gas Pipeline  埋地燃气管道; 埋地输气管道

Central Asia gas pipeline  中亚天然气管线

China-Kazakhstan petroleum and gas pipeline  中—哈油气管线

city buried gas pipeline  城市天然气管道

CITY GAS PIPELINE  城市燃气管道; 城镇燃气管道

corrosion of long-distance gas pipeline  长输管道腐蚀

deepwater oil and gas pipeline  深水油气管线

design gas velocity  设计气速

dry gas pipeline  天然气管道

East-West Gas Pipeline  西气东输管道

East-West Gas Pipeline Project Ⅱ  西气东输二线

East-West gas pipeline project of India  印度东气西输

end line packing of gas pipeline  末端储气

fault of gas pipeline network  管网故障

Final map of underground gas pipeline  地下燃气管道竣工图