Alarm, feed valve or pump starter switch actuates just before the burner switch cuts the firing.
警报器，进水阀或泵启动装置开关在燃烧器关闭燃烧之前启动。
A simple rotary switch selects firing voltage, burn time, and burn voltage.
一个简单的旋转开关选择着火电压，燃烧时间与烧伤电压。
A high voltage nanosecond pulse generator is developed for firing a large current switch.
介绍一种为大电流开关点火的精密长延迟纳秒高压脉冲源的研制。
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