以下为句子列表：
英文: Using 80% dipropylene glycol and 20% 1,4-butanediol as molecular regulator could also narrow the molecular weight distribution and reduce the amount of smaller molecules in product.
中文: 研究还发现分子量调节剂对产品分子量分布有较大影响，采用混合型调节剂也能够使分子量分布变窄并降低小分子物质含量。
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英文: Methods Tinidazole and chloromycetin were used as the principal agents,carbomer-940,propylene glycol as preservatives to prepare compound tinidazole gel.
中文: 方法以替硝唑、氯霉素为主药,卡波姆-940、丙二醇等为辅料制备凝胶;采用双波长分光光度法测定主药含量。
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