gun n brass 枪炮黄铜
When I came back, the gun was lying on the earth, its worn brass glowing in the sunlight, and she was sitting there crying.
当我回来时,那把枪正躺在地上,它那已被磨损的黄铜在阳光下闪闪发光,而她正坐在那里大哭。
In order to obtain rust, brown, gun-black and ancient green films on brass at room temperature, the chemical coloring process on brass in acid solution was studied.
为了在黄铜基材上室温下获得铁锈色、棕色、枪黑色、仿古绿色膜层,研究了黄铜酸性化学着色工艺。
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