以下为句子列表：
英文: According to the characteristics of pinnoite in Dachaidan, a new technology of preparing boric acid with two-step sulfuric acid method was studied.
中文: 摘要针对大柴旦柱硼镁石矿特点，对酸法制硼酸进行了工艺优化研究。
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英文: Methods The menthol and hydroxybenzene in complex boric acid powder were determined by GC.
中文: 方法采用毛细管气相色谱法测定复方硼酸散中薄荷醉和苯酚的含量。
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英文: Objective To establish a method to determine the content of menthol and hydroxybenzene in complex boric acid powder.
中文: 摘要目的建立测定复方硼酸散中薄荷醉和苯酚含量的方法。
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英文: The common determination method of boric acid in brighten sulfate zinc electroplating baths was corrected to meet the requirements of production.
中文: 摘要光亮硫酸盐镀液中硼酸的测定，一般采用氯化钾镀锌体系中对硼酸的测定方法。
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英文: The method was also suitable for the determination of boric acid in potassium chloride zinc electroplating bath.
中文: 本法也适应用于氯化钾体系测定硼酸含量。
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