The scientist measured the densities of different materials.

科学家测量了不同材料的密度。

The densities of gases are generally lower than those of liquids.

气体的密度通常比液体的密度低。

The densities of the two solutions were compared in the experiment.

实验中比较了两种溶液的密度。

The densities of the planets vary widely in our solar system.

在我们的太阳系中，行星的密度差异很大。

Engineers need to know the densities of materials to design structures.

工程师需要了解材料的密度来设计结构。

Centrifugation is commonly used in laboratories to separate substances of different densities.

实验室里常用离心分离不同密度的物质。

Densities presumably can be probed by radar .

利用雷达也许还能探测出气体的密度。

Two side thyroid gland appearance, densities such as often.

两侧甲状腺形态 、 密度如常.

Power densities of several kinds of explosion phenomena are estimated.

计算了几种爆炸的功率密度值。

Arboreal marsupials may not recover to pre - logging densities.

树袋动物的密度可能无法恢复到伐木以前了.