Silver dials are then rhodium or even fine silver to prevent tarnishing.

银色表盘铑甚至是精细的银，以防止变色。

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Waveguide products need to use much silver for silver plating.

波导类产品的电镀要消耗大量的银。

youdao

Waveguide products need to use much silver for silver plating.

波导类产品的电镀要消耗大量的银。

youdao