短語詞組短語broken back curve 斷背曲線broken spiral curve 不完整回旋線broken logarithmic curve 斷折對數(shù)曲線Broken -back Curve 斷背曲線broken curve detail 折線曲線three -broken-line curve 三折線曲線Curve for broken boundary 破損邊界曲線 返回 broken curve