This pore space is known as porosity and is expressed as a percentage of the total rock volume.

这个孔隙空间被称为孔隙度，用岩石总体积的百分比表示。

youdao

The swelling of rock meeting with water not only leads to the increase of rock volume, but also reduces the strength of rock.

岩石遇水膨胀不仅引起岩石体积增加。而且显著消弱岩石强度。

youdao

Combined with the digital elevation model characteristics, this paper improves the grid method that is used to calculate earth-rock volume.

结合数字高程模型的特点，对土石方工程量格网法计算方法进行改进。

youdao

Data from the Sharad (SHAllow RADar) instrument (on Mars Reconnaissance Orbiter), document that some of these glacial-like features, which you find at Mars' mid-latitudes, have a significant volume of ice left below a surface of rock debris.

BBC: Q&A: Liquid water on Mars

On a slightly lesser comedic level, the 50, 000-volume literary center has also recently installed lyrical works in Little Rock and New Orleans and hosted such notables as Anne Carson and Thomax Lux, shown above, reading poetry on the Brooklyn Bridge.

FORBES: A Poetry Bonanza in Lower Manhattan