For example, as for coated screw, the coating and the core metal are two homogeneous materials.
例如带有镀层的螺钉，镀层和内部金属为两种均质材料。
A new procedure was developed to materialize multiple-surface layers, for example, a core metal base followed by corrosion, primer, paint, and oxidation.
所以我们开发了一种新的方法来表现这种多层油漆的外观。如那类由金属构成的，经过各种腐蚀，底漆，油漆及氧化过程后的外观。
As the interface follows the solidification front of the shell metal, the areas of soft core metal showing at the barrel surface, will be patchy and not continuous.
由于结合层往往是沿着外层金属的凝固线所形成的，因此在辊身表面所呈现的此类缺陷是不连续，不规则的。
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