“Heaviside unit function”的概念、定义、翻译、参考文献-科学参考

单词	Heaviside unit function
释义	Heaviside unit function [`hev·ē´sīd `yü·nǝt ¦fǝŋk·shǝn] ^MATHEMATICS The real function f (x ) whose value is 0 if x is negative and whose value is 1 otherwise.
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