The harmonic problems, such as distorting supply voltage, decreasing power factor, increasing energy loss, interfering with communication systems etc. are discussed in the part one.
第一部分讨论各种谐波问题，如使供电电压畸变，降低功率因数，增加能量损耗，干扰通讯系统等。
The correlation between the factor of restitution in impact and the factor of kinetic energy loss defined in corresponding references is deduced.
推导了相关文献中定义的碰撞恢复因数与动能损耗系数间的对应关系。
The power factor of equipment can be used to measure the loss of energy in transmission lines.
依据用电设备的功率因数，可测算输电线路的电能损失。
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