... 固体废弃物 solid waste 隔音门 sound insulation door 传声器,麦克风 speaking trumpet (or megaphone) ...
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The Sound Insulation Door of Experimental Theater Maintenance Project.
戏剧厅隔音门工程规划案。
More can be added with the door seal, so that the sound insulation system is complete without missing.
更可加装门底密封条，使隔音系统完成无缺。
The inner door of the door is sealed with a sealing strip, and the sound insulation effect and the sealing performance are improved.
门框内侧预装有密封条，隔声效果及密封性提高。
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