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第一招:双层玻璃窗效果最佳安装双层玻璃窗可使外来噪音减低一半。由于双层玻璃窗的两层中间有5mm厚的空间,有较好的隔音效果,可
The first measure: the best double-glazed windows installed double-glazed windows can reduce external noise by half. Due to the 5mm thick space between the two layers of the double-glazed window, the sound insulation effect is better.