Take a loop of masking tape and tape the board, copper side up, to a piece of cardboard (eg. the back of a writing pad).

采取一回路的掩蔽磁带和磁带董事会，铜的一面向上，一块硬纸板(例如回到一个书写板)。

youdao

It runs normally and stably since putting into production, burr on side and bottom edges of cathode copper disappears completely, and the surface physical specifications is the first rate.

投入生产运行以来一直正常稳定，生产出的铜阳极板，荡边及飞边毛刺彻底消失，表面物理规格达全优。

youdao

We suggest putting some copper in blank area on top side to improve plated quality.

建议加在顶层空白区域加些铜以提高电镀质量。

youdao

The situation was even more dramatic on the copper side of the business.

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An increase in copper demand places pressure on the supply side, which continues to experience shortfalls in mine output versus forecasts.

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While iron ore, metallurgical coal, copper, and crude oil faced temporary supply side disruptions that boosted prices excessively, the longer-term, commodity super cycle remains intact.

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