1) second order self energy
二阶自能
1.
In this paper, the second order self energy of harmonious Fermi system with S =1/2 at T ≠0 is calculated with this rule, and an expression of sum for frequency also is obtained.
本文用这些规则给出自旋Ｓ＝１／２时的费米均匀体系在Ｔ≠０时二阶自能，并完成对频率求和后的表达式。
2) second order self-adaptive
二阶自适应
1.
Aiming at that trend forecasting method is only suitable for smooth time series but the data in power demand forecasting is not smooth,an improved second order self-adaptive forecasting method is proposed.
针对趋势预测法仅适合于平稳时间序列,而电力预测中数据不平滑的特点,提出一种改进的二阶自适应预测方法,通过数据预处理平滑历史数据后,自适应调整预测模型的参数,并对实际供电企业的售电量和负荷进行了分析,证明了提出模型达到了一级精度要求,预测结果令人满意。
2.
Based on the characteristics of load forecasting methods,the combined forecasting method of second order self-adaptive method and inverted index model is proposed.
针对不同负荷预测方法的预测特性,提出了特性互补的组合预测新思路,建立了基于二阶自适应系数法和移动样本倒指数法的组合预测模型,采用最优组合预测与递归等权组合预测相结合的方法确定组合系数,并进行实时监测修正。
3) autoregressive structure of order 2
二阶自回归
1.
A discrete time risk model under interest rates with autoregressive structure of order 2 is discussed in this paper.
在利率具有二阶自回归相依结构,同时考虑到保费、理赔支付时间的离散时间风险模型下,得到了在停时T,保险公司在初始准备金为u时,破产持续时间的分布的递推公式。
4) second-order system
二阶系统<自>
5) second order autocorrelation
二阶自相关
1.
The second order autocorrelation signal of short pulse occurring in nonlinear crystal is studied,which indicatesd that the pulse contrast of 2nd order autocorrelation equals that of original pulse.
结合非线性晶体分析了超短脉冲的二阶自相关信号的产生过程,结果表明自相关曲线的信噪比等于原始脉冲的信噪比。
6) second-order natural vibration frequency
二阶自振频率
补充资料：自调自净自度
【自调自净自度】
（术语）同自调项。
（术语）同自调项。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条