In the paper the mechanism, cause and exhibition in vibration frequency and current frequency of electric machinery are stated.
文中阐述了电机各种故障的机理、产生原因和其在电机振动频谱或电流频谱中的表现。
The electromagnetic force decays rapidly in the molten steel, and its decaying speed is related to the current frequency and polar pitch of the stirrer.
在电磁搅拌作用下，电磁力的大小随钢液液池宽度的增加呈指数衰减趋势，其衰减速率与电流频率和搅拌器极距有关。
It is pointed out that the self-induction coefficient is relative to the current frequency in the actual conductor circuit, even if there is not any magnetic medium.
指出在无磁介质存在的条件下，实际导体回路的自感系数也与电流频率有关。
The results show that the magnetic density and the Lorentz force of semisolid slurry increased with the enhancement of current strength at the same current frequency;
结果表明：在相同频率下，半固态浆料内的磁感应强度、电磁力的大小随电流强度的增加呈线性增加的关系；
The variable polarity power supply can satisfy the welding process of the aluminum and aluminum alloy by adjusting the current frequency, positive and negative current time and amplitude value.
调节正负半波的幅值、频率及占空比能满足铝及铝合金的焊接工艺要求。
This paper argues that the current frequency of food safety incidents and food safety supervision and accountability are not in place of the main administrative responsibility are closely linked.
本文认为，当前食品安全事故频发与食品安全监管主体行政责任追究不到位有密切联系。
The paper introduces the application, main alteration plan and the setting of relational parameters of technique of alternating current frequency conversion in Longmen planer′s electrical alteration.
介绍交流变频调速技术在龙门刨床电气改造中的应用和总体改造方案及有关参数的设置。
The effects of pulse current, frequency, duty ratio and inverse current in zincate system on the appearance and corrosion resistance of zinc coating are investigated.
研究了在锌酸盐镀锌体系中采用脉冲电流时，脉冲频率、脉冲的占空比、反向电流对镀层外观、耐蚀性的影响。
The effects of pulse current, frequency, duty ratio and inverse current in zincate system on the appearance and corrosion resistance of zinc coating are investigated.
研究了在锌酸盐镀锌体系中采用脉冲电流时，脉冲频率、脉冲的占空比、反向电流对镀层外观、耐蚀性的影响。
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