铝和铜的密度

Density of aluminum and copper

以上为机器翻译结果，快速获取精准的人工翻译结果，建议选择有道人工翻译

1
采用ICP—AES法准确、快速地测定电锌中的铝、铅、铜、镉、铁、锡等微量元素，并对方法的准确度和精密度进行了检验。
The Al, Pb, Cu, Cd, Fe, Sn etc trace element in the electrolytic zinc were accurately and quickly measured by using ICP-AES method.
2
该产品以铜基、铝基或POM为基体，配以优质钢球，按一定的角度和密度有序地排列，采用特殊工艺加工而成。
It's a copper or aluminium or POM being produced through special workmanship, on which the high quality rollers are arranged orderly in certain Angle and density.

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