a variable quantity
网络释义
双语例句原声例句
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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。
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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。
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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。
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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
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