基本解釋[數(shù)學(xué)]三重對(duì)稱三次對(duì)稱英漢例句雙語(yǔ)例句And fivefold, threefold and twofold axes of rotational symmetry.五重，三重和兩重螺鏇對(duì)稱軸。threefold symmetry更多例句詞組短語(yǔ)短語(yǔ)threefold axis of symmetry 三重對(duì)稱軸threefold symmetry更多詞組專業(yè)釋義數(shù)學(xué)三重對(duì)稱三次對(duì)稱