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It's not a law of gravity, but on average, that tends to be true.
这一规律并非铁律，但是通常情况下，事实就是如此。
youdao
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True density and specific gravity of your sample are displayed.
样品的真密度和比重都能够显示出来。
youdao
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True density and specific gravity of your sample are displayed.
样品的真密度和比重都能够显示出来。
youdao