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
• 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

• We use x as the symbol for an unknown quantity.
  我们用x表示一个未知数。
• He is an unknown quantity for his rivals.
  对于对手们而言，他是个未知数。
• Because of the introduction of the unknown quantity of high, many problems generate, such as ranging-error larger, unknown location information increased. The problems result in poor stability of equation-solving, low positioning-accuracy and serious error accumulation.
  由于引入了高度坐标的未知量，产生的测距误差影响变大、未知位置信息增多等问题造成方程求解的稳定性较差、定位精度不高、误差累积严重。
• 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。
• As a teacher, he's still an unknown quantity.
  作为一名老师，人们还不知道他是什么样。
• 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。
• The new sale director is still a bit of an unknown quantity.
  新来的销售部主任大家还不大了解。
• 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。
• What we would find if we could fly to the moon is an unknown quantity.
  如果我们能飞到月球上去，在那里我们将会发现什么，这是很难以预料的。
• You must eliminate an unknown quantity.
  你必须消去一个未知数。