基本解释[機械工程]絕對閉塞制絕對分段制词组短语短語absolute permissive block system 絕對容許閉鎖系統;繙譯block system absolute 絕對閉塞制block system absolute permissive 權宜絕對閉塞制absolute block system更多词组专业释义機械工程絕對閉塞制絕對分段制