The cooling technique of the blade inner passage plays a significant role in the design of blades for gas turbine.

叶片内部通道冷却技术在航空发动机叶片的设计中占有重要的位置。

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These structures are called Passage Graves, because the inner chamber, sometimes several chambers in fact, could only be entered from the outside through a narrow passageway.

这些结构被称为通道式坟墓，因为这里的内室，有时实际上是几个房间，都只能从外面通过一个狭窄的通道进入。

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Between the north wall and the inner chamber is a passage for movement to the bathroom facilities.

北墙和里面房间之间有条冷巷，通向厕所和冲凉房。

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