“null”的概念、定义、翻译、参考文献-科学参考

单词	null
释义	null [nǝl] ^MATHEMATICS Indicating that an object is nonexistent or a quantity is zero. ^NAVIGATION 1. The azimuth or elevation reading on a navigational device indicated by minimum signal output. 2. Any of the nodal points on the radiation patterns of some antennas.
随便看	impingement attack impinger implant implantation implanted atom implanted device implementation implexed implication implicit differentiation implicit enumeration implicit function implicit function theorem implicit programming implosion implosion weapon imposed date imposed load imposition impost impotence impound impounding reservoir impregnate impregnated bit

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