以下为句子列表：
英文: 1959 Cyclophosphamide, an alkylating agent designed to improe the selectiity of cancer drugs, approed by FDA.
中文: 1959年,FDA批准烃化剂环磷酰胺为抗癌药,使抗癌药物有了更多的选择.
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英文: 1959 Cyclophosphamide, an alkylating agent designed to improve the selectivity of cancer drugs, approved by FDA.
中文: 1959年,FDA批准烃化剂环磷酰胺为抗癌药,使抗癌药物有了更多的选择.
更详细...
英文: Phenol alkylating catalyst has experienced a succesion of variations from liquid acid to oxide to ion exchange resin, zeolite molecular sieve as a kind of new alkylating catalyst, with it unique structure and characteristics and adjustable sourness, apert
中文: 摘要苯酚烷基化催化剂的发展经历了由液体酸、氧化物到离子交换树脂的演变过程，沸石分子筛作为新型烷基化催化剂，以其独特的结构和可调变的酸性及孔径等特点，是比较理想的催化剂。
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