锡镍枪黑色、锡钴合金镀枪黑色、白铜锡代铬、无氰环保滚挂镀白铜锡。
Five, tin gun black, tin cobalt nickel alloy plating gun black, cupronickel tin and chromium, cyanogens plating cupronickel tin environmental roll.
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。
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.
这部电影里夜晚的场景中会出现黑色的轿车，冲锋枪开火等，能够清晰捕捉到这些黑色的物体是这款机型的优势。
In this film you have night scenes with black cars, with Tommy guns going off and so on. To be able to shoot those blacks and be crystal clear was an advantage with this camera.
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