“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	turion turkey Turkey red oil Turkey stone Turkish geranium oil Turk's head rolls turmeric turn turnaround turnaround cycle turnaround document turnaround system turnaround time turnbuckle Turnbull's blue Turner's syndrome Turnicidae turning turning area turning bar turning basin turning-block linkage turning buoy turning center turning circle

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