采用浆体循环与陈化沉淀的方法，使沉淀的铀浓缩物由无定形凝胶体或微晶转化成易沉降过滤的粗晶体。

Through precipitate circulation and aging, the yellowcake slurry in amorphous or microlite form was transformed to crystal precipitate.

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这显示在野蚕和家蚕利它素结构中，有着与家蚕丝蛋白相类似的结构，存在着结晶区域（沉淀）和无定形区域（上清）。

This result suggests that the primary structures of the kairomone protein and silk protein from B. mori are similar, both containing a crystalline (precipitate) and a amorphous (supernatant) region.

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