词语主纲
解释main line
main line〔名词〕干线,总管道,集油总管详细»
main line〔名词〕干线详细»
main line〔名词〕主线,干线详细»
main line〔名词〕铁路干线,干线,主线详细»
main line〔名词〕干线,主管道详细»