在具有低质量流量的过程中，排气管内部可能会发生局部回流。

During the process of low mass flow, local refluence may occur in the exhaust manifold.

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在具有低质量流量的过程中，排气管内部可能会发生局部回流。

During the process of low mass flow, local refluence may occur in the exhaust manifold.

youdao