本文给出激光大气通信距离方程的一种简化形式。

A simplified form of range equation for laser communication in atmosphere is given.

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推导了红外搜索系统的作用距离方程，并修正传统的红外搜索系统作用距离方程。

An active distance equation of infrared search system has been derived. The traditional active distance equation of infrared search system is corrected.

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根据距离方程和多普勒定位方程组推导了针对ECS成像算法的几何校正计算公式。

According to the range equation and Doppler positioning equation, geometric correction calculating expressions corresponding to ECS algorithm were derived.

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But instead in this chemistry course, I will just tell you the solutions to differential equations. And what we can do is we can start with some initial value of r, and here I write r being ten angstroms. That's a good approximation when we're talking about atoms because that's about the size of and atom.

但在这个课里，我会直接，告诉你们微分方程的解,我们可以给距离r一个初始值,我这里把r取10埃,当我们讨论原子时,这是一个很好的近似,因为原子的尺寸。

麻省理工公开课 - 化学原理课程节选