1. 其中Uoff在断态时的反向偏置电压,ir是流过开关的反向漏电流。
The Usoff and Ir are respectively the reverse bias voltage in the off-state and the reverse current through the switch.

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2. 当硼含量大于0 . 0 10 %时,铸组织中出现了明显的网状或网状碳化物,冲击韧性下降幅度较大。
When boron content surpasses 0.010 %, there is some clear continuous carbide network or discontinuous carbide network in the microstructure, as a result, the impact toughness declines greatly.

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3. 当硼含量大于0 . 0 10 %时,铸组织中出现了明显的网状或网状碳化物,冲击韧性下降幅度较大。
When boron content surpasses 0.010 %, there is some clear continuous carbide network or discontinuous carbide network in the microstructure, as a result, the impact toughness declines greatly.

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