金属镀金工艺之一。即金属镀金工序完成后，为使金属金光闪烁、富丽明亮而进行的一道工艺。先用黑土矾加水烧沸，配成混合液盛在盘中。然后将块状铜、银金属浸入熔液中烧沸。当镀件色彩比原来之色趋暗时，将镀件、铜．银一并捞出。过滤液体．去除渣滓，加入白盐后再将其在强火上烧开，再将镀件、铜块和银块一并浸入熔液。
事实上红矮星也很常见，天文学家认为它们是星系中最常见的星体。
Red dwarfs are also common - in fact, astronomers say they are the most common type of star in the galaxy.
事实上红矮星也很常见，天文学家认为它们是星系中最常见的星体。
Red dwarfs are also common -in fact, astronomers say they are the most common type of star in the galaxy.
这种红锯蛱蝶带鳞的翅膀上也有同样的图案，它因此得名。
A similar design appears on the scaly wings that gave the red lacewing butterfly its name.
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