基本解释[機械工程]啃軌词组短语短語gnaw rail b 起重機啃軌gnaw rail by crane 起重機啃軌gnaw rail更多词组专业释义機械工程啃軌For a long time in order to settling the gnaw rail problem a great many endeavors and attempts having been done by people.因此長期以來人們爲解決啃軌問題做了很多努力和嘗試。