Among aluminium alloy indirect extrusion producing period, various process condition influence different result to the coarse grain structure.
铝合金反向挤压过程中，不同的挤压工艺条件对粗晶组织将产生不同的影响。
The tremolite grain in LuanChuan nephrite is bigger in size, and its structure is somewhat coarse.
该地产出软玉中透闪石颗粒较大，结构稍粗、欠细腻。
Coarse grain and differ the stone material of a structure its exterior effect is poorer.
粗粒及不等粒结构的石材其外观效果较差。
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