另外，对直接用混合法则计算工程弹性常数的方法作了误差分析。

Moreover, it makes an error analysis of the method by which engineering elastic constants are directly calculated with the rule-of-mixtures.

youdao

复杂意谓它就是那样，非线性意谓递归和更高数学法则，而动态意谓非常数及非周期。

Complex implies just that, nonlinear implies recursion and higher mathematical algorithms, and dynamic implies nonconstant and nonperiodic.

youdao

Because any velocity I ascribe to a particle or an object, you will add a certain constant to it by the law of composition of velocity.

因为我描述的任何一个质点或者物体的速度,你都要根据速度叠加法则,给它加上某个常数

耶鲁公开课 - 基础物理课程节选