The drawing method and principle of radar chart with iso beam height (radar range chart) were described based on the practical experience.
结合实践经验，详细介绍了雷达等射束高度图（也称为雷达有效地理视距图）制作的原理和方法。
The radar chart method is improved and applied to the synthetic evaluation of power quality.
对雷达图法进行了改进，并应用于电能质量的综合评估中。
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