The casing is respectively connected with a water inlet pipe and a water outlet pipe, and the front seal head is respectively equipped with a grape juice inlet and a grape juice outlet.

壳体上分别连接有进水管和出水管，在前封头上分别设置有葡萄榨汁进口和葡萄榨汁出口。

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The causes which aluminium alloy profiles extrusion container internal wall is broken and front seal wall damaged are analysed. The relevant prevention measures are given.

分析了建筑铝合金型材挤压筒内衬破裂和挤压筒前端面与模套密封处磨损的原因，提出了相应的预防措施。

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The front piece includes a foot portion defining an axially extending engagement surface for interference-fit engagement with the annular surface of the seal ring.

前件包括限定与密封环的环形表面干涉配合式接合的轴向延伸的接合表面的足部。

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