And mass will be double or triple integral, depending on how many dimensions you have, dV of whatever density function you have, dA or dV.

计算质量可看成二重或三重积分，这取决于空间维数，取决于密度函数，dA还是。

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The probability density function (PDF) is constructed from the time distributions of signal and backgrounds and the relations among time, time uncertainty, mass, and mass difference variables.

根据信号、本底的时间分布以及时间、时间误差、质量、质量差等变量之间的关系，构建概率密度函数。

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A distribution of air pressure and the mass of a given volume of air such that the air density is a function of only atmospheric pressure.

气压的-种分布情况，给定体积内空气质量，即空气的密度，仅仅是气压的函数。

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Furthermore, the fx-CP400 features a variety of functions designed to help students learn and instructors teach at school, including a USB mass storage function for quick and easy data transfer, and compatibility with Casio data projectors to enable the calculator's display to be projected on a screen.

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Chemo-radiotherapy specifically degrades muscle mass, and depresses the function of mitochondria, the tiny structures that act as the boiler room of the cell, generating energy.

BBC: Could fitness be key to cancer surgery success?

Already, 3D printing has been refined to the point where digital models can be duplicated into physical prototypes or production parts that closely resemble mass-produced products in looks and function.

FORBES: Written by Robert ��Buzz�� Kross