Light stability, in the presence of organic matter reduction of the vulnerability of black metallic silver.

在有机物存在时易被还原为黑色金属银。

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Bleaching: (1) Chemical process on photographic materials, which converts the black metallic silver image into a colourless silver complex.

漂白：(1)照相材料的化学处理方法。它把黑色金属银粒的影像变成无色的银粒复合物。

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Cells that have the ability to directly reduce silver solution producing an insoluble black metallic silver precipitate are termed-angentaffin cells).

亲银细胞有能力，直接地，不靠外加试剂，将银液中的银还原为一种不溶性的黑色金属银沉淀的细胞称为亲银细胞。

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Both machines are characterised by a Metallic Precious Black finish with silver chrome accents on the LCD cover and inside.

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Seven exterior colors are available: new for the 2013 model year Metallic Slate and Glacier White, along with the previously offered Brilliant Silver, Super Black, Cayenne Red, Pearl White and Blue Ocean.

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It's the WGR614, and it bears the same metallic silver casing of many other Netgear products, but there's also a conspicuous black antenna rising from the back.

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