求教：发动机上面红线内的管子叫啥？谢谢

来源: LaoZhang_WXC 于 2019-02-27 05:10:39 [旧帖] [给我悄悄话] 本文已被阅读：次

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求教：发动机上面红线内的管子叫啥？ 谢谢