Aluminium with protective finish.

铝防护完成。

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Heavy canvas is stretched and painted, often using stencils, and coated with protective finish.

重型画布拉伸和彩绘，经常使用网板，完成与防护涂层。

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Powder coating aluminium is a process that creates a durable, protective finish of polymer granules.

铝合金的静电喷涂处理是一道能够产生一种耐用型的、高保护度的高分子聚合物颗粒的工序。

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He said it was especially important to finish the new protective wall before new rainfall, expected in the next few days.

BBC: Hungary builds wall to slow possible new sludge wave