结合内开内倒窗同时使用后，保温、装饰、隔音效果更为完。

Combined with the window also used in fall, heat preservation, decoration, sound insulation effect more.

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除此之外，根据有关“内开内倒窗和下悬窗”的EN 12101-2标准，也对自然排烟和排热通风装置（NRWG）的系统解决方案进行了测试。

Additionally, system solutions for natural smoke and heat exhaust ventilators (NRWG) were tested according to EN 12101-2 for turn-tilt and bottom hung windows.

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除此之外，根据有关“内开内倒窗和下悬窗”的EN 12101-2标准，也对自然排烟和排热通风装置（NRWG）的系统解决方案进行了测试。

Additionally, system solutions for natural smoke and heat exhaust ventilators (NRWG) were tested according to EN 12101-2 for turn-tilt and bottom hung windows.

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