左光申请于2019年，商品服务：非医用洗浴制剂; 皮肤保湿液（化妆品）; 脱毛膏; 美容面膜; 香精油; 草本化妆品; 化妆品; 眼霜; 面霜; 护肤霜;
左旋分子就是使偏振光发生左(即逆时针方向)旋的分子。
A left-handed molecule is one that causes polarised light to rotate to the left (ie, anticlockwise).
左起：史蒂夫·斯波尔丁，铝蔡博士，斯蒂芬妮·戴维斯和肖恩·麦克唐纳分享吉隆坡光时刻总部科士威的。
From left: Steve Spaulding, al Chuah, Stephanie Davis and Sean Macdonald sharing a light moment at Cosway's headquarters in Kuala Lumpur.
方法：用紫外分光光度法测定左氧氟沙星的含量，旋光法测定葡萄糖含量。
Methods:Content of levofloxacin lactate and glucose were examined with ultra violet spectrophotometry and polarimetry , respectively.
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