pipelinern.管道安装工(铺道工；管路专家)pipelinen.管道；管线；渠道v.用管道运输pipeline interval流水线间隔时间pipeline schedule流水线调度pipeline crossing管道穿越pipeline stopcock管道旋塞pipeline corridor管廊pipeline fracture管道断裂pipeline cleaning管道清洗pipeline shutdown管线停输pipeline coal gas管道煤气pipeline industry管线工业