The technical characteristics and economic merit of indoor sound barrier was analyzed according to the design based on the fixed type and movable type barrier.
通过固定式及活动式声屏障的设计，分析了室内声屏障的技术特点和经济效益。
Unique split type design, save ceiling space of the vehicle, indoor unit is easy to install, no influence on appearance of the whole vehicles.
独特的分体式设计，不占用车辆顶部空间，室内机方便安装，位置灵活，不影响整车的外观设计。
Unique split type design, save ceiling space of the vehicle, indoor unit is easy to install, no influence on appearance of the whole vehicles.
独特的分体式设计，不占用车辆顶部空间，室内机方便安装，位置灵活，不影响整车的外观设计。
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