The key to the procedure is a specially tuned laser that destroys the natural brown pigment melanin in the iris, the eye's central colored portion.
手术的关键是一种特殊的调谐激光器，它可以破坏虹膜(眼睛中部有颜色的部位)内天然的“褐色素”内的黑色素。
The brown pigment of loquat nut is natural and pigment.
枇杷果核棕色素是一种天然色素。
The results suggested that Hazelnut shell brown pigment can be used as natural anti-oxidants.
表明榛子壳棕色素具有较好的抗氧性能力，可以作为天然抗氧化剂。
The brown pigment can be get from the shell of hazelnut, whose water-soluble well, and nature is stable, it can be used to drink, soy sauce, pastry food industry and so on as the natural pigment.
从榛子壳中可以提取出棕色素，该色素水溶性好，性质较稳定，可以作为天然色素应用于饮料、糕点、酱油等食品行业。
The brown pigment can be get from the shell of hazelnut, whose water-soluble well, and nature is stable, it can be used to drink, soy sauce, pastry food industry and so on as the natural pigment.
从榛子壳中可以提取出棕色素，该色素水溶性好，性质较稳定，可以作为天然色素应用于饮料、糕点、酱油等食品行业。
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