以下为句子列表：
英文: Ammonium sulfate and potassium sulfate were used as sources of N and K because these sources are more efficient in these soil conditions.
中文: 用硫酸铵和硫酸钾作氮和钾肥源因其对该土壤条件更有效。
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英文: Furthermore, the influence of ammonium sulfate on the separation of amino acids mixture was investigated.
中文: 还考察了在混合物中含有硫酸按时的情况。
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英文: Linsuanerqingjia, ammonium sulfate purification, packaging materials, chemical products (excluding hazardous chemicals) sales.
中文: 磷酸二氢钾、硫酸铵提纯，包装材料、化工产品（不含化学危险品）销售。
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英文: Through the theoretical prediction and experiment tests, electrodialysis method could be used directly to separate glutamic acid and glutamine, and a little ammonium sulfate in the mixture benefited the separation process.
中文: 通过理论预测和实验验证，可以用电渗析法直接分离谷氨酰胺和谷氨酸，且原料中少量的硫酸铵有利于分离过程的进行。
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英文: (3) Hyp was purified after cell collection, suspension, ammonium sulfate precipitation and Ni-NTA column chromatography.
中文: 3、离心发酵液以收集菌体,用缓冲液悬浮菌体,经过超声破碎、硫酸铵分级沉淀和Ni-NTA亲和层析,得到了电泳纯的Hyp。
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