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unknown quantity

英 [ˌʌnˈnəʊn ˈkwɒntəti]

美 [ˌʌnˈnoʊn ˈkwɑːntəti]

未知量;未知数

化学

英英释义

noun

  • a variable whose values are solutions of an equation
      Synonym:unknown
    1. a factor in a given situation whose bearing and importance is not apparent
      1. I don't know what the new man will d

    双语例句

    • His ability to make decisions in a crisis is an unknown quantity.
      他在危机中作决定的能力还是个未知数。
    • Youth is the smile of the future in the presence of an unknown quantity, which is itself.
      青春就是未来在向一个陌生人微笑,而这陌生人就是自己。
    • By the way, the unknown quantity of the integral equations arising in these problems is the equivalent density of current.
      在求解过程中所建立起来的积分方程均以等效电流为未知量。
    • Phrases like "a number" or "the number" tell us our expression has an unknown quantity, called a variable.
      像一个数或这个数之类的短语,告诉我们表达式中含有一个未知量,称之为变量。
    • He is an unknown quantity for his rivals.
      对于对手们而言,他是个未知数。
    • The problem is that in both opposing Mr Obama and putting distance between himself and President Bush, Mr McCain became an unknown quantity and hence a risk.
      问题在于麦凯恩既要对抗奥巴马,又要与布什拉开距离,他因此成为了一个未知数,因而也是一个风险。
    • An equation in which the highest power of an unknown quantity is a square.
      未知量的最高幂是平方的等式。
    • As negotiating partners the Taliban are at best an unknown quantity.
      塔利班作为谈判伙伴充其量是一个未知数。
    • Woman, even more than the working class, is the great unknown quantity of the race.
      妇女比工人阶级蕴藏着更多的未知数。
    • John is a possibility for the job, but he is still an unknown quantity.
      约翰可能获得这工作但现在还是个未知数。