N° 253
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检测铝制表面上的蓝色印模压痕 应识别用印模压出的蓝色印记。此时应注意,根据印泥颜料中溶剂浓度的不同,颜料涂层呈现的色彩或深或浅。
Detection of a stamped blue mark on aluminum housing
A stamped blue mark should be detected on aluminum housing. At this, the degree of strength of the blue lacquer is changing dependent of the moisture content of the color.
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