Applies and fixes suspended ceilings and plasterboard partitions, fire rating systems, acoustic tiles, and composite wall linings to buildings.
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fire rating systems
防火等级制度
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Applies and fixes plasterboard partitions, suspended ceilings, fire rating systems, acoustic tiles, and composite wall linings to buildings.
纤维泥水匠安装建筑物所用的石膏板隔墙、吊顶、防火等级系统、吸声瓦和组合墙衬。
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