基本解释导油器，挡油板词组短语短语oil l deflector 挡油圈oil l deflector ring 挡油环oil baffle oil deflector 挡油圈oil deflector ring 挡油环brake drum oil deflector 制动轮导油器oil deflector更多词组专业释义经济学挡油圈交通运输工程挡油圈