◎ 左旋 zuǒxuán
[levorotation;levulorotation;counter-clockwise] 朝左手方向或逆时针方向旋转——主要用于光的偏振面

1.contra solem; levoclination; {眼} levotorsion; levocycloduction; levorotation; sinistrality; sinistral coiling; left-handed rotation; levogyration; levo rotation; {物} laevorotation; levo-; laevo-