Unverified90% confidenceDecision RuleTime unknown
空心墙（石膏板隔墙、轻钢龙骨墙）安装置物架必须使用飞机型/蝴蝶型空心墙锚栓或找准龙骨位置固定，普通膨胀螺栓在空心墙内会直接拉脱
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