brown pigment 褐色素 ; 棕色及颜料
brown pigment stone 棕色素结石
golden-brown pigment 金棕色色素
red-brown pigment 红棕色素
natural brown pigment 天然棕色素
chestnut shell brown pigment 板栗壳棕色素
pigment brown [颜料] 颜料棕 ; 供应钛铬黄
Instead, people with blue eyes have a brown pigment, known as melamin, at the back of their irises but have low concentrations of melanin in the front of their irises.
相反，蓝眼睛的人有一种褐色色素，被称之为黑色素，位于虹膜背部，但在虹膜前部黑色素浓度较低。
The laser energy removes the brown pigment, or melanin, from the top layer of the iris, and the blue eye colour emerges over the following two to three weeks.
激光能去除眼球虹膜最外层的棕色素或黑色素，而蓝眼珠会在两到三周之后显现。
The light brown pigment seen here in the necrotic hepatocytes around the central vein is lipochrome.
图中中央静脉周围坏死肝细胞中的浅褐色色素为脂褐素。
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