open-circuit operation的用法和樣例：
例句
- For operation refer to the stylebook of VCB.
斷路器的操作詳見斷路器樣本。 - 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.
分析比較了在高壓廠用電系統中保護真空斷路器操作過電壓的幾種方式，提出在工程設計中採用何種保護方式的建議。
