square wave

基本解释

Pulse Width Modulation device is a circuit which can produce square wave signal with fixed period and adjustable pulse duration ratio (pulse width).
脉宽调制器是一种能够产生周期固定而占空比（脉宽）可调的方波信号的电路。
High-precision DC signal is as testing of the static characteristics of the system, square wave signal is as testing the dynamic characteristics of the system.
高精度直流信号输出用作测试系统的静态特性，方波信号输出用作测试系统的动态特性。
Hardware and software designs are amply introduced in the paper and through the test analysis using square wave'the feasibility and validity of this design are affirmed.
详细地介绍了系统的硬件设计和软件设计，并在仿真的基础上通过对方波信号的试验分析，验证了系统设计的可行性和正确性。

And when we take the wave function and square it, that's going to be equal to the probability density of finding an electron at some point in your atom.
当我们把波函数平方时，就等于在某处,找到一个电子的概率密度。
麻省理工公开课 - 化学原理课程节选
So again if we look at this in terms of its physical interpretation or probability density, what we need to do is square the wave function.
如果我们从物理意义或者,概率密度的角度来看这个问题，我们需要把波函数平方。
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So, at this place where it hits zero, 0 that means that the square of the wave function is also going to be zero, right.
它达到0的地方，这意味着波函数的，平方也是,如果我们看概率密度图。
麻省理工公开课 - 化学原理课程节选

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an oscillation, for example in voltage pulse, that alternates between two fixed values with a negligible transition time between the two, giving a rectangular waveform