It is very complicated to design large capacity of power distribution project through making single line drawing, calculating short circuit current and selecting products.

在大容量配电设计中，绘制单线图、计算短路电流和产品选型是很复杂的。

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Patterns - Define custom patterns to use while drawing with the pencil, line, or eraser tool (instead of a single pixel).

模式-定义自定义模式时要使用的绘图铅笔，线条，或橡皮擦工具(而不是单个像素)。

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