ring structure meaning in Chinese

环结构
环形结构
环状结构；环状构造

The other two, thymine and cytosine, are single ring structures called pyrimidines .
另两个为胸腺嘧啶和胞嘧啶，即称为嘧啶的单环结构。
Analysis on the ring structure of urban land use in jinan city
济南城市土地利用的圈层结构分析
Adenine has a purine ring structure
腺嘌呤具有嘌呤环的结构。
Consanguineous ring structures
同族环形山构造
Concentric ring structures
同心环形山构造

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