“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	flow valve flow velocity flow visualization flow welding floxuridine fl oz fluctuating current fluctuation fluctuation noise fluctuation test fluctuation theory fluctuation velocity flue flue dust flue exhauster flue gas flue gas analyzer flue gas expander fluellite fluence fluent aphasia flufenamic acid fluid fluidal texture fluid amplifier

科学参考收录了103327条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。