But inside, special windows cut power bills by blocking solar heat in summer and retaining indoor warmth in winter.
但是在室内，特殊的窗户通过在夏天阻挡太阳的热量和在冬天保持室内温暖来减少电费。
European Special Windows and Doors have two forms, one is fixed and other one is operated. But mostly Special Windows are the fixed Windows.
欧式异型门窗有固定式，和开启式二种。但多数的欧式异型窗为固定式。
European Special Windows and Doors have two forms, one is fixed and other one is operated. But mostly Special Windows are the fixed Windows.
欧式异型门窗有固定式，和开启式二种。但多数的欧式异型窗为固定式。
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