double line

Starting from the Stearne-Gallacher proof that electrons have self-rotation from the experiment, the paper explains in a directly perceivable way the double line of spectrum line fine structure by using "self-rotation-orbit coupling".

本文从斯特恩──盖拉赫实验证实电子具有自旋入手，用电子“自旋──轨道耦合”直观地解释了光谱线精细结构的双重线。

This novel, based on a dual-clue structure, employs at the same time a traditional and an innovative new form of narration, which not only determines the overall framework and the structural layout of this novel, but also reflects, by way of such an heterogeneous, anti-tra.

在这部作品中,作家使用了双重线索。

In the paper,least squares method is used to estimat the parameter about reduplication linear model.

用推广的最小二乘法及极大似然估计法对双重线性模型AR(1) -MA(0 )中的参数进行估计 ,从而提高模型的拟合度和预测精度 。