Dimensionless quantities in physics are those that require no unit .
物理学中无量纲的量就是不需要单位的量。
Both natural unit and dimensionless transformation are usual methods used in scientific research.
采用自然单位和无量纲变换都是科研上常用的方法。
With reducing and regaining constant, it is showed that natural unit and dimensionless transformation are the same in physical equation.
本文给出寻找无量纲变换的一种具体作法，通过物理方程常数的压缩与恢复得出自然单位与无量纲变换相一致的结论。
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