The water insoluble precipitate (acetic acid lignin, AcL) had a low weight-average molecular weight range from 341 to 253 (Mw) and a narrow molecular weight distribution from 1.1 to 1.2.

水不溶沉淀物（乙酰化木质素）的重均分子量分布在341到253之间，分散性系数分布在1.1到1.2这一窄范围内。

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Benedict 's solution is an alkaline solution of copper (ii) sulfate, which is reduced to insoluble copper (I) oxide by reducing sugars, giving a red precipitate.

本尼迪克特溶液是硫酸铜(二价)的堿性溶液，它可以通过还原糖被还原为不溶性的铜(一价)的氧化物，产生红色的沉淀物。

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Cells that have the ability to directly reduce silver solution producing an insoluble black metallic silver precipitate are termed-angentaffin cells).

亲银细胞有能力，直接地，不靠外加试剂，将银液中的银还原为一种不溶性的黑色金属银沉淀的细胞称为亲银细胞。

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