开关管 meaning in English

gas switching tube
switch tube
switching tube

Designation method for typesof vacuum interrupter
真空开关管型号命名方法
Generic specification of vacuum switch tubes for load switches
负荷开关用真空开关管总规范
Grading standard of quality for vacuum switch tubes for contactors
接触器用真空开关管质量分等标准
Grading standard of quality for vacuum switch tubes for load switches
负荷开关用真空开关管质量分等标准
Grading standard of quality for vacuum switch tubes for circuit breaker
断路器用真空开关管质量分等标准

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