open-circuit operation

• 断路操作

open-circuit operation的用法和样例：

例句

1. For operation refer to the stylebook of VCB.
   断路器的操作详见断路器样本。
2. A few protection types for VCB operation over-voltage are analyzed and compared, and some suggestions for selecting protection types in engineering design are given.
   分析比较了在高压厂用电系统中保护真空断路器操作过电压的几种方式，提出在工程设计中采用何种保护方式的建议。