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 definition and function of the volume fraction and mass fraction for the hybrid fiber composite material was approached.

讨论了混杂纤维复合材料体积含量和质量含量的定义和作用；

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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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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.

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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