0 the mass of a particular volume of a substance when compared with the mass of an equal volume of water at 4°C -- 相对密度
The project spurred significant local opposition due to its relative density compared to the surrounding area, which is generally suburban in character.
The latter provides undisturbed specimens, on which testing can be conducted, for instance, to determine the soils relative density, water content and mechanical properties.
The most important feature of this graph is that, at early times, the relative density of the unit cell decreases.
Changes in relative density differences of individual receptors are also making it difficult (but not impossible) to co-localize all members of the receptor populations which can be co-clustered.
On average, the body has a relative density of 0.98 compared to water, which causes the body to float.
It has a hardness of 2.5 - 3 and a relative density of 4.3.
Young specimens have a lightweight semi-hard wood, which becomes hard and heavier in grown-up individuals, reaching a relative density of up to 0.92.
It is usual, in the sintering literature, to plot a quantity known as the relative density against reduced time.
