英语词汇constant variance怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	constant variance
释义	constant variance 简明释义常方差：在统计学中，指随机变量的方差保持不变的性质。当随机变量的方差不随时间、位置或其他因素的变化而改变时，称其具有常方差。网络释义 1 [数]?常数方差 ... constant unfolding 常值开折 constant variance 常数方差 constant vector 常数向量 ... 短语 1 plate constant variance 底片常数方差 2 constant variance of method 常数变易法 3 Constant elasticity of variance process 不变方差弹性过程双语例句 1 The good in him was a constant variance with the bad. 他善良的一面经常和邪恶的一面发生矛盾。 2 Non-constant error variance or heteroscedasticity. 非常量误差方差或异方差性。 3 It revealed that the product of the standard deviation of the estimated sampling variance and square root of the number of samples was a constant. 实验也证明，取样方差估计值的标准偏差与样本数目的平方根之积可近似为一常数。
随便看	photoelastic reflection method photoelastic sandwich method photoelastic sensitive photoelastic sensor photoelastic simulating photoelastic strain gage photoelastic strain measuring method photoelastic stress photoelastic, stress analysis photoelastic stress analysis photoelastic stress analysis photoelastic stress measurement photoelastic stress pattern photoelastic study photoelastic surface coating photoelastic technique photoelastic tensor photoelastic test photo elastic test photoelastic test photoelastic testing photoelastic test installation photoelastometry photo-electic position photosetter photoelectret

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