“signum”的概念、定义、翻译、参考文献-科学参考

单词	signum
释义	signum [`sig·nǝm] ^MATHEMATICS The real function sgn(x ) defined for all x different from zero, where sgn(x ) = 1 if x > 0 and sgn(x ) = -1 if x 0.
随便看	head organ head-per-track headphone head process head pulley head-pulley-drive conveyor headroom headrope heads head scanning head section headset head shaft head sheave head shield headsill head smut headspace head stepping rate headstock head tide headtree head up head-up display head value

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