Department of the Air Self-cooling, with a small size, light weight, heat insulation, high-grade characteristics.
系空气自冷式，具有体积小、重量轻、绝缘耐热、等级高的特点。
For swimwear a minimum grade of colorfastness to light 5 must be fulfilled.
对泳衣，耐光照色牢度不得低于5级。
Physical : features : monoclinic, lolorless for excellent, lolorless or light yellow crystal for first grade.
物理状态：单斜晶，优等品为无色透明体，一等品为无色或带淡黄色晶体。
Grade AA fresh hen eggs, shell light brown and clean, even in size.
AA级鲜鸡蛋，蛋壳浅棕色，清洁，大小均匀。
Grade AA fresh hen eggs, shell light brown and clean, even in size.
AA级鲜鸡蛋，蛋壳浅棕色，清洁，大小均匀。
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