短語詞組短語polar frequency plot 矢量頻率圖polar bullet plot 極坐標靶心圖inverse polar plot 倒極標作圖;繙譯DP capability polar plot 動力定位能力曲線polar plot of load factor 過載極曲線polar bull -eye plot 極坐標靶心圖polar bulls -eye plot 靶心圖schmidt plot polar 施密特極坐標圖 返回 polar plot