If back - gouging is applied, grinding to bright metal is required.

如果采用火焰气刨, 则应将其打磨至可见光亮的金属表面.

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Metalescent -- having the appearance of bright metal.

金属光泽 — 有明亮的金属外观.

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Use sand cloth or steel wire brush to clean both tube and cut to bright metal.

清除管道和切割部位,使其金属表面发光发亮.

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Use sand cloth or steel wire brush to clean both ends to a bright metal finish.

使用纱布或钢丝刷清除管道和切割部位,使其金属表面发光发亮.

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Use sand cloth or wire brush to clean both tube and cup to a bright metal.

采用砂布或钢丝刷清除管道和端口,使其显露出光洁的金属色.

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