三相负荷不平衡以及系统元件三相参数不对称都会引起电力系统三相不平衡。
The definition and national standard of three-phase unbalance in power system were expatiated.
就像应用“暗房”，你可以控制相圈上的拍摄参数。
You can control their shooting parameters on the camera canva just like Darkroom.
为了完成该项，创建一个名为ListBase的类型并添加一个从ListBase到List的binding关系，并将参数t与x相绑定，如图表5所示。
To accomplish this, create a class named ListBase and add a binding relationship from ListBase to List, and then bind the parameter t to X, as shown in Figure 5.
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