The floor cavity packing light quality padding, the principal constituent for the cement, the foaming agent, its function is: Enhances the floor intensity, rigid bearing capacity.
地板内腔填充轻质填料，主要成分为水泥、发泡剂，其作用为：提高地板强度、刚性承载能力。
Dehiscence of the floor of the hypotympanum with protrusion of the jugular bulb into the middle ear cavity is a rare otological finding.
颈静脉球经下鼓室底部骨层裂隙膨入中耳腔，是一种罕见的中耳腔血管异常。
Through the analysis of the stress characteristics of the circular pipe cavity mushroom floor, this paper analyzes the calculating model and method of the floor slab.
通过分析圆管式空心无梁楼盖的受力特点，分析了此楼板体系的计算模型及计算方法。
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