然后用喷砂、火焰或化学方法处理，提高表面活性。

Then sandblasting, flame or chemical means, and improve the surface activity.

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根据SSPC SP1的规定，在喷砂处理之前，应当用溶剂将附着在钢材及相邻聚乙烯材料表面的油脂及其他污染物清洗掉。

Oil, grease and other contaminants shall be removed from the steel and adjacent polyethylene surfaces by solvent cleaning in accordance with SSPC SP1 prior to abrasive blast cleaning.

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混凝土体量的表面处理提供了一个由喷砂和松木条形成的粗糙外表面和光洁的内表面的对比。

The surface's treatment of the concrete volumes provides a contrast between the outside with a rough finish created by a shuttering of sand blasted pine strips and an interior of smooth finishes.

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