ring opening的用法和样例：
例句
- Ring opening of copolymerization and homopolymerization between acrylpimaric acid and ethylene oxide at different mole ratio were studied.
研究了丙烯海松酸与不同摩尔数的环氧乙烷所进行的开环均聚和共聚反应。 - And the experimental tests had been carried out to verify the established model as well as the dynamic characteristics under opening loop control.
并通过实验，对所建立的动力学模型及开环控制下平台的实际动态特性进行了验证。
