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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

    • To remove ( an unknown quantity) by combining equations.
      消去通过等式合并消去(一个未知量)
    • If he was to quench his thirst for knowledge, he could do nothing other than explore the unknown quantity.
      他要满足求知欲没有别的办法,只能到自己陌生的领域中去探索。
    • He is an unknown quantity for his rivals.
      对于对手们而言,他是个未知数。
    • This way, the problem in a finite element analysis, the unknown field function or its derivative values in each node becomes a new unknown quantity ( that is, degrees of freedom).
      这样一来,在一个问题的有限元分析中,未知场函数或其导数在各个结点的数值就成为新的未知量(亦即自由度)。
    • 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。
    • To her the outside world was a totally unknown quantity.
      对她来说,外部世界完全是个未知数。
    • Inquiring Into Determining the Unit Price of Piece Rate Wage by the Regression Linear Equation With One Unknown Quantity
      运用一元线性回归方程制定计件工资单价的探讨
    • 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。
    • 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。
    • We use x as the symbol for an unknown quantity.
      我们用x表示一个未知数。