pipeline pig[化] 清管器pipelinen.管道；管线；渠道v.用管道运输pipeline with circular section圆形断面管道pipeline leak detection system管线泄漏监测系统pipeline resonant transversely横向共振管道Pipeline float and drag method管道浮拖法pipeline Wallace tree algorithm华莱士树算法pipeline of residential quarter小区管网pipeline materials and supplies管道物质pipeline for transformation oil输油管线pipeline trailer-mounted pump输油管线挂车泵pipeline maintenance and repair管道维修