- 對(duì)稱環(huán)
- ring: vt. (rang rung ) 1.鳴，敲(鐘)，搖( ...
- symmetrical: 調(diào)和的; 對(duì)稱的均稱的；相稱的平衡的; 對(duì)稱性的; 對(duì)位的; 均衡的; 兩側(cè)對(duì)稱的; 輸入; 相稱性的; 勻稱的
- airfoil; symmetrical: 對(duì)稱翼形
- axially symmetrical: 軸對(duì)稱
- bilaterally symmetrical: 兩側(cè)對(duì)稱的
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