Any material, which are cut by thermal process, must be dressed back to cleanmetal.
任何材料经过热切割后，必须进行表面清理直到露出材料底色为止。
2
Electronic equipment manufacturers use CFC's to cleanmetal, and CFC's are commonly used as refrigerants and to make foam insulation.
电子设备制造商使用氯氟化碳清洗金属，并且一般都利用氯氟化碳作为制冷剂和制造泡沫绝缘材料。
3
In late 90's, with a view of environmental protection, people began to use ultrasonic instead of acidic solution to cleanmetal parts. It is a great innovation for cleaning technology.