second order spectrum 第二级光谱 ; 二级图谱 ; 二级光谱
second d order spectrum 第二级光谱
second order wind spectrum 二阶风速谱
second order power spectrum 二阶功率谱
Then, based on defining three conceptions called as the second order spectrum, two theorems about the second order spectrum were proven.
然后，以定义三个叫做二阶谱的概念为基础，证明了两个关于二阶谱的定理。
The nonlinear Schrdinger equation leads to a second order nonlinear difference equation, and we obtain transmission spectrum of wave by iterating the difference equation.
把非线性薛定谔方程转化成二阶差分方程，通过迭代此差分方程得到透射谱。
For a given dispreading distance, the widths of the two spectrum regions increase until overlay when second-order dispersion approaches zero.
对给定的传输距离，随着光纤向零色散附近靠近，两个频谱区谱宽增加直到相互重叠。
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