全景天窗系统是一种新型的多层面板月光车顶，它可为前排和后排座椅都提供敞开式天窗。

Panoramic roof systems are a new type of multi-panel moon roof that offer openings above both the front and rear seats.

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详细介绍了为某钢铁企业服务的敞开式净循环水系统的设计过程。

The design process of the open circulating cooling water system which is in the service of an iron and steel enterprise is described.

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