三元环包含在较大的环系统中，像三萜类中。
Cyclopropane rings are included within larger systems, such as triterpenes.
结果表明，该重排反应经过一个三元环过渡态。
The result shows that the transition state of the rearrangement reaction has a three-membered ring structure.
结果发现，该重排反应经过一个面外三元环过渡态。
The result shows that the transition state of the rearrangement reaction is a three-member ring structure external the molecular plane.
前言：“三元环”是认识和管理食品企业的一种思维方法。
"Three element - rings" is a kind of thinking mode to cognize and manage food enterprises.
组成“三元环”的三元素为服务内容、服务对象和服务手段。
The contents of "Three element - rings" are the service contents, service targets and service approaches respectively.
本文对环已烷（1）—异丙醇（2）—水（3）三元部分互溶体系液液平衡实测数据，用三种方法进行了分层计算。
Threc calculating methods of dividing into liquid stratum of cyclohexane (1)-2-propanol(2)-water (3) ternary system liquid-liquid equilibrium have been introduced.
对控制环量方法在离心叶轮准三元设计中的应用展开了研究。
This paper focuses on the application of method of controlled circulation in the quasi three dimensional design process of centrifugal impeller.
本文共分三章进行论述，其摘要如下：1。环氧化合物是一种重要的含氧三元杂环化合物。
Expounded in this article is divided into three chapters, which are summarized as follows:1. Epoxide and its derivatives are important triatomic heterocyclic compounds.
本文共分三章进行论述，其摘要如下：1。环氧化合物是一种重要的含氧三元杂环化合物。
Expounded in this article is divided into three chapters, which are summarized as follows:1. Epoxide and its derivatives are important triatomic heterocyclic compounds.
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