hot-bleaching action of gum rosin 脂松香的热漂白作用
The bleaching action of fluorides is slow in the alizarin dye procedure.
在茜素染料法中，氟化物的消色作用较慢。
But if you want teeth bleaching action in your toothpaste, you can have that, too.
但是，如果你想要使牙齿漂白，你可以用美白牙膏。
The review focuses on products which have a chemical, bleaching action rather than an abrasive action.
此篇报告的重点在于具有化学的、漂白的作用之产品，而不是研磨剂作用之产品。
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