Typical features of subaqueous volcanic rocks include perlite with glassy structure and pillow structure, lamellar tuff, bentonite.
水下喷发火山岩典型标志为珍珠岩、玻璃质结构、枕状构造、纹层状凝灰岩和膨润土。
Such as slag, water slag, expanded vermiculite, mineral wool, rock wool, expanded perlite, rice husk and wood chips, it should not be used in both vibration and retaining structure.
如炉渣、水渣、膨胀蛭石、矿物棉、岩棉、膨胀珍珠岩、木屑和稻壳等，它不宜用于受振动和围护结构上。
In this paper, the scientific bases for preparation of filter-aid have been discussed and the chemical properties and physical structure of perlite filter-aid have been analysed.
本文讨论了制造助滤剂的科学基础，测定了珍珠岩助滤剂的化学性质和物理结构。
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