为了在上两层创建黑色的金属饰面，这些体块都包裹了铝锌合金镀层——这是一种镀有铝锌合金的钢板。
To create the dark metal finish on the two upper levels, these blocks are clad with Galvalume - a type of steel sheet that is coated with an aluminium and zinc alloy.
至于金属，选中黑色以协调玻璃墙中使用的钢和铝的纹理及外观。
As for the metals, black color was chosen so as to harmonize the texture and looks of both steel and aluminum used in the glazed walls.
磷化液不仅应用于黑色金属及其合金上，而且已应用到铝、锌、铜、镍、铬等各种材质和合金上的表面处理。
The phosphorated fluid not only is applied to ferrous metal and its alloy, but also to surface disposal of aluminum, zinc, copper, nickel, chrome and various materials and alloys.
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