ring open-hearth

• 开环

ring open-hearth的用法和样例：

例句

1. Each relay driver is an open - collector transistor with a suppression diode.
   每一个中继驱动器是一个集电极开环的三极管和一个稳压二极管。
2. 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。