Trivalent chromium plating has some distinct advantages over hexavalent chrome on decorative application.There are potential problems on its application, and its available condition is limited.是什么意思_Trivalent chromium plating has some distinct advantages over hexavalent chrome on decorative application.There are potential problems on its application, and its available condition is limited.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句