可分为三种类型的英文

falling into three categories

• 可:    approve
• 三:    three
• 种类:    kind; class; descr ...
• 型:    mould; model

例句与用法

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1. Three kinds of integron were detected from 7 s . typhimurium with a size of 638bp , 1913bp and 2013bp respectively . the products were cloned and sequenced . the results showed that they contained two aada2 gene , one dhfrxii gene associated with the resistance
   序列分析表明，这7株鼠伤寒沙门氏菌的型整合子可分为三种类型，一种大小为638bp ，存在1个阅读框；另一种大小为1913bp ，含1个aada2 、 1个dhfr基因盒和1个阅读框；第三种大小为2013bp ，有1个aada2基因盒和1个阅读框。