The passage communicates with the first and second Chambers and has a groove disposed on a bottom wall of the case.

通道与第一和第二腔室连通，并且具有设置在壳体的底壁上的槽。

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The passage communicates with the first and second Chambers and has a groove disposed on a bottom wall of the case.

通道与第一和第二腔室连通，并且具有设置在壳体的底壁上的槽。

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