0 windows that have two layers of glass to keep a building warm or to reduce noise from outside -- vidro duplo
中文繁体
雙層窗…
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双层窗…
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doble ventana, Vidrio Aislante…
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double vitrage…
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dvojitá skla (v oknech)…
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dobbeltisolerede vinduer…
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jendela kaca ganda…
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กระจกสองชั้น…
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