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可控硅过零触发对供电网无污染。
SCR zero trigger for the power grid on non-polluting.
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可控硅元件在工作时会发热，使设备内温度很高。
SCR components will heat at work, so that high temperature equipment.
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可控硅元件在工作时会发热，使设备内温度很高。
SCR components will heat at work, so that high temperature equipment.
youdao