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翻译
  • 简明
  • 柯林斯
  • 牛津
  • null

    TOEFL/IELTS

    • 英 [nʌl]
    • 美 [nʌl]

    释义

    • adj.
      <术>零值的; 等于零的; (协议) 无法律效力; 失效的
  • 实用场景例句

    • 全部

    A spokeswoman said the agreement had been declared null and void.

    女发言人称该协议已宣布无效。

    柯林斯例句

    The agreement will be considered null and void.

    该协议将被视作无效。

    辞典例句

    When the galvanometer reads zero the circuit is in the null - balance position.

    当检流计的读数为零时,电路处于零平衡位置.

    辞典例句

    This null - balance system is usually more accurate than the direct - readout bridge.

    这种调零系统通常比直读电桥更精确.

    辞典例句

    The court ruled that the claim was null and void.

    法庭裁决此项要求无效.

    辞典例句

    The operator O is the null operator.

    算符O是零算符.

    辞典例句

    This check is null and void.

    本支票无效.

    辞典例句

    This contract is null and void.

    此合同无效.

    辞典例句

    The null subset corresponds to the term 1.

    空集则对应于常数项1.

    辞典例句

    The null result of the Michelson - Morley experiment suggests that the effects of the ether are undetectable.

    迈克耳 孙- 莫雷实验的否定结果使人想到,以太的效应是不能检查到的.

    辞典例句

    Whenever we reject the null hypothesis, the conclusion we do accept is called the alternative hypothesis.

    无论何时,拒绝无效假设时, 我们所接受的结论叫做备择假设.

    辞典例句

    The null result was directly related to a central postulate of the theory.

    零结果都直接与理论的中心假设相联系.

    辞典例句

    A null - balance system is provided by balancing the magnetic forces by electrostatic forces.

    零位平衡系统是靠静电力来平衡磁力而造成的.

    辞典例句

    The device provides extreme sensitivity through a small range around the null point.

    此装置在零点附近很小一段范围内具有极高的灵敏度.

    辞典例句

    The term null hypothesis arose from earlier agricultural and medical applic ation of statistics.

    无效假设这个概念产生于早期的统计学在农业和医学方面的应用中.

    辞典例句

    收起实用场景例句
  • 英英释义

    Noun

    • 1. a quantity of no importance;

      "it looked like nothing I had ever seen before"

      "reduced to nil all the work we had done"

      "we racked up a pathetic goose egg"

      "it was all for naught"

      "I didn't hear zilch about it"

    Adjective

    • 1. lacking any legal or binding force;

      "null and void"

    收起英英释义
  • 词根词缀

    词根: null

    =none,表示"没有"

    • n.

      null

      null没有→n.无

    • v.

      annul 宣告无效,取消

      an加强+nul=null没有→强调没有→取消

      nullify 使无效,抵消

      null没有+ify……化→v.使无效,抵消

  • 同义词

    adj.不存在的,空的,愚蠢的

    nonexistenthollowclearblankfoolishbareinexistentemptyinanevacuoussenselessunprofitable

    adj.没用的

    inutilepiddlingimmaterialworthlessineffectualbindingtrivialinvalidunsubstantialtriflingnugatorynotinoperativefutileno-goodpurposelessunavailinginefficaciousvaluelessgood-for-nothinginsignificantuselessinconsequential

    adj.被删除的

    extinguishedeffacedexpungeddestroyeddissolvedexterminatedannihilatedextirpatedobliteratedeliminated

  • 行业词典

    • 体育

      平跤   

    • 法律

      宣告无效   

    • 物理学

      零力系   null-force system