同时讨论了我国的大压机、小压机及两面顶压机现状； 国际上大颗粒单晶研究方向。
And also it includes the discussion on present status of large press, small press and belt type press, as well as international research direction of big monocrystalline diamond grains.
单元粒子是单晶体构成的细小的粘土颗粒，是由一种或多种层状结构的硅酸盐构成的混层粘土的基本单元。
The fundamental particle is the very fine clay particle composed of single crystal, and is the basic unit of mixed layer clays formed by one or several kinds of silicates with the sheet structure.
多晶硅电池含有细小颗粒的单晶硅，它含有很多细小光亮的成分。
These consist of small grains of monocrystalline silicon. The cells consist of many small, shiny elements.
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