mass density

基本解释

"The traffic density in a big city is like the mass density in a lens galaxy, " Marshall said.
大城市的交通密度就像透鏡星系的物質密度。
Based on the measured data from the winter wheat fields in Zhengzhou of Henan Province, the vertical distribution of root length density(RLD)and root mass density(RMD)were analyzed.
根據在鄭州進行的鼕小麥根系田間實測資料，研究了根長密度和根質量密度在砂壤土中的垂直分佈。
According to the law of mass conservation the incremental mass density can be inferred from the divergency of the scalar unperturbed mass density and the vectorial displacement field.
由質量守恒定律，質量密度增量來自未撓動的質量密度的散度和位移矢量場。

Like every college town, Austin likes smart growth, mass transit and high density.
FORBES: Austin's Secrets For Economic Success
He studies the material properties of tissue and organs from animals and cadavers to assign shape, size, density, mass and ten or more coefficients that describe how each cube of virtual flesh will deform when confronted with a given force from a given direction.
FORBES: Smart Dummies
The American city of the future is going to look a little bit more like the American city of the past, more closely centered on a high density downtown with mass transit increasingly used to get workers in and out.
FORBES: Why Oil Prices Rose in the Spring of 2008 and Will Rise Again