But if, actually, it has varying density maybe because it is some metallic thing with various metals or with varying thickness or something then you can still get the mass by integrating the density.

但如果，密度可能是变化的，因为它是许多金属的混合物，或者厚度在变化等等，但你仍然可以通过对密度积分得到质量。

youdao

The general point is that the increasing intensity, or thickness, of globalism - the density of networks of interdependence - is not just a difference in degree from the past.

通常的观点是全球主义增长的强度，或密度——相互依赖的网络的密度——不仅是一与过去在程度上的不同。

youdao

a perfectly spherical shell dr at some distance, thickness, d r, dr we talk about it as 4 pi r squared d r, so we just multiply that by the probability density.

在某个地方的完美球型壳层,厚度，我们把它叫做4πr平方，我们仅仅是把它,乘以概率密度。

youdao

Often the strength, density or thickness of a structure is dictated by the largest forces it has to withstand.

ECONOMIST: MONITOR

One-hundred-and-two holes have been dug so far and 1, 100 measurements have been made of ice thickness, snow density and other features - data deemed vital by scientists evaluating the future of the Arctic sea-ice.

BBC: Arctic team gives up on ice radar