任何阴极射线管都储存有三百伏电压，所以先要用一把强力螺丝起子来对付主电容器。
A cathode ray tube can hold 300 volts of passive electrical storage, so use a hefty screwdriver across the main power supply capacitor, first.
本文运用IGBT逆变及相关技术设计并实现了X射线探伤机控制器的主电路、驱动电路和控制电路。
The main circuit and driving circuit of X-ray detection machine controller are designed by use of IGBT inverter and related technology.
射线衍射分析结果表明，材料的主晶相为莫来石。
The XRD result shows that the main crystalline phase of the ceramic is mullite.
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