variable quantity

常见例句

双语例句

• Secondly, the number of unusual words in any author is a variable quantity.
  其次，一些不寻常的词作者是在任何一个变量的数量。
• A symbol that is used in mathematical or logical expressions to represent a variable quantity .
  用在数学或者逻辑表达式里代表一个可变量的符号。
• Because the brake clearance is influenced by axis moving, the swing of disk brake, its result is a variable quantity.
  提升机闸瓦间隙大小受到轴窜、偏摆等的影响，所以其值是一个动态变化的量。

原声例句

• The basic definition-- the expected value of some random variable x--E--I guess I should have said that a random variable is a quantity that takes on value.
  最基本的定义,某一个随机变量X的期望值E,我应该提到过,随机变量是一个可以取值的数
  耶鲁公开课 - 金融市场课程节选
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