square degree

The total income of national economy and the amount of population are predicted with second-degree moving model and with the principle of least mean square fit error determining designated value N.

利用二次移动平均模型，引入均方拟合误差最小的原理确定出时段数N，对国民经济总收入、人口数量等项目进行了预测。

The assessment method of circular degree error is introduced based on minimum mean-square value method.

介绍了基于最小二乘圆法的圆度误差的评价方法.

The3-D film cinema in this section covers a floor area of400 square meters with a120-degree arc screen, able to show wide-screen movies and virtual-reality city animations.

面积约400平方米。有120度弧形屏幕，可播放利用虚拟现实技术实现的城市仿真影片和宽银幕影片。

Remain its accuracy rotating 360 degree around center for Square and cylindroid vials.

它的精度主要是指圆柱和方水准器的沿轴心360度翻身.

Asymptotic Distribution of Chi-square Random Variable with Random Degree of Freedom

带有随机自由度的卡方随机变量的渐近分布