数学上的Sgn 函数返回一个整型变量，指出参数的正负号。语法Sgn(number)， number 参数是任何有效的数值表达式。返回值如果 number 大于0，则Sgn 返回1；等于0，返回0；小于0，则返回-1。number 参数的符号决定了Sgn 函数的返回值。
符号函数
网络释义专业释义
... symbolic expression 符号式，符号表达式 symbolic function 符号函数 symbolic language 信号语言，符号语言 ...
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双语例句原声例句
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这里提出一种简化模拟电路网络符号函数的新方法。
A new methodology to obtain a simplified symbolic network function for analog circuits is presented.
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如果不需要符号函数指针，为什么升压：绑定需要一个？
If ampersands aren't needed for function Pointers, why does boost: : bind require one?
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前置滤波器使带有符号函数的控制切换产生连续可测信号，实际控制律是光滑的。
The proposed stable feedforward filter makes the control switching with sign functions to produce a continuous and measurable signal so that the actual control law is smooth.
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And the solution to this equation looks like this where it is written in terms of a quantity called a wavefunction.
这个方程的解法是,看起来像是写成数学符号就是,波函数。
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So this symbol here is actually what we call a wave function.
这里的这个符号,实际上是一个波函数。
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I'm using the fact that when you take a cosine and change the angle inside the cosine, it doesn't care. whereas, if you go to the sine and change the angle inside the sine, it becomes minus sine.
我用了一个结论,当你使用余弦函数时,改变角度的正负,函数值不变,而对于正弦函数,改变角度的符号,则函数值也会变号
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