变异数误差 error of variance: 误方差error variance: 机误变量; 误差变量; 误差变异; 误差方差;误差偏差; 误差分散; 误差离散between plot error variance: 区间误差方差effective error variance: 有效误差平方和effective variance of error: 有效误差方差下载手机词典可随时随地查词查翻译