density
n. 稠密，密集；密度
复数 densities
例句
The region has a very high population density.
这一地区人口密度很高。
《柯林斯英汉双解大词典》
Jupiter's moon Io, whose density is 3.5 grams per cubic centimetre, is all rock.
木星的卫星木卫一全是岩石，其密度为每立方厘米3.5克。
Astronomers know that Pluto and Triton have nearly the same size, mass, and density.
天文学家们知道冥王星和海王卫一拥有几乎相同的体积、质量和密度。
