有一条输气管堵塞了。One of the air-ducts has become blocked.输气管道工程属于生态影响型建设项目.The gas transmission pipeline project belongs to the ecological impact project type.陕西到北京的天然气输气管道建成投产.The Shaanxi - Beijing natural gas pipeline was put...

“输气管”的英语可以翻译为：[机] appendix ...