短語(yǔ)詞組短語(yǔ)polygonal vortex line 折渦線(xiàn)polygonal line algorithm 多邊形算法polygonal line drum 折線(xiàn)卷筒convex polygonal line 凸折線(xiàn)simple polygonal line 簡(jiǎn)單多邊形鏈circumscribed close polygonal line 圓內(nèi)接閉折線(xiàn)polygonal line setting 折線(xiàn)測(cè)設(shè)polygonal ultrasonic delay line 多角形超聲延遲線(xiàn)slope of polygonal line 折線(xiàn)邊坡 返回 polygonal line