基本解释[机械工程]底开卸料车英汉例句双语例句The technology of car dumper unloading and technology of bottom-opened unloading wagon are simply introduced.简要介绍翻车机卸车工艺和底开门卸车工艺的基本情况。bottom dumper更多例句专业释义机械工程底开卸料车