When we evaluate the property of contact materials, we should not only compare thier arc time, but also compare thier erosion rate of materials and arc energy.
作为评价触头的性能，不能单一地比较其燃弧时间的长短，尚应全面评价其分断电弧能量和材料侵蚀率。
Arc current reducing rate and arc voltage at the time of arc discharging are established for every mathematical model.
得到电弧放电瞬间每一模型下的电流变化率和电弧电压。
During the arc time, changing rate of current could be adjusted by modulating the parameter of the control circuit, which ensures the proper output power of the arc.
在燃弧阶段，调节控制回路参数，控制燃弧电流的变化速度，保证充足的燃弧能量。
The results show that increasing the nitrogen rate as plasma arc gas, higher stirring intensity and longer alloying time, the nitrogen content in steel is also increased.
提高等离子氮流量、增强搅拌、延长精炼时间，钢中含氮量增加。
Although curves of big arc lines are higher in rate of hit its level of difficulty in techniques is higher and it is not easy to command in a short time.
弧线大的曲线虽然全中率很高，但技术难度较大，短时间内不容易掌握。
Although curves of big arc lines are higher in rate of hit its level of difficulty in techniques is higher and it is not easy to command in a short time.
弧线大的曲线虽然全中率很高，但技术难度较大，短时间内不容易掌握。
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