collecting main〔名词〕汇流管,总集管详细»
collecting main〔名词〕集水主管道,集汽主管道,汇水总管详细»
collecting main〔名词〕集水干管详细»
collecting main〔名词〕总管,干管详细»
collecting main〔名词〕收集主管详细»
collecting main〔名词〕降尘总管,大烟道详细»
collecting main汇流排，汇流条，母线详细»
总管main;main pipe;manifold;trunk main详细»
总管comptroller and auditor general详细»