样本平均差方 mean square deviation: 均方差; 均方离差; 均方偏差mean square frequency deviation: 均方频率偏差mean square root deviation: 均方根偏差mean-square deviation: 均方差; 均方偏差; 均方偏移root mean square deviation: 均方根差; 均方根偏差; 均方根误差下载手机词典可随时随地查词查翻译