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。
Pillow structure consists of a suit of deformed concave upward bodies made of silt and sand whose original layering bent round parallel the basal surface and it truncated at the top surface.
枕状构造是砂层中一组呈“凹”形弯曲的变形沉积体，它的原始层平行于枕状体的底面，顶面则是一个平直的截切面。
The multilayer structure preferably has more than one reflective layers and is preferably in the form of a pillow pouch.
该多层结构优选具有多于一个反射层并且优选为枕形袋的形式。
The concave structure can hold your neck, and give it well protection. The other side of the double-side pillow can be filled with buckwheat shells, chaffs or vacuum cotton etc.
凹槽结构独有设计，增加颈部承托，保护颈椎，双面枕另一面可选择填充荞麦壳、金谷壳、真空棉。
The pillow type bag has the advantages of simple structure, convenience and practicability, beautiful appearance, wide range of application, and the like.
本实用新型具有结构简单、方便实用、外形美观、应用广泛等优点。
The pillow type bag has the advantages of simple structure, convenience and practicability, beautiful appearance, wide range of application, and the like.
本实用新型具有结构简单、方便实用、外形美观、应用广泛等优点。
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