1) low-order mode approximation
低阶模近似
1.
In the propagation state, using perturbation theory and low-order mode approximation, characteristic equations for propagation constants are prcsented.
利用摄动理论和低阶模近似,讨论了特征方程。
2) low-rank approximation
低阶近似
1.
Combined with the signal-noise subspace theory,a new rank-choose criterion for low-rank approximation was raised.
在分析基于奇异值分解(SVD)的线性最小均方误差(LMMSE)估计的实现原理的基础上,结合信号、噪声子空间理论,给出了矩阵低阶近似时秩的选取方法。
3) low dimensional approximation
低阶近似
1.
Proper orthogonal decomposition and low dimensional approximation of the wall-pressure fluctuation acting on the apron of the stilling pond;
消力池导墙脉动壁压的正交分解与低阶近似
2.
Proper orthogonal decomposition(POD) and the low dimensional approximation are applied to the aberrated wavefront time series,the comparisons between the measured wavefronts and low dimensional approximation reconstruction wavefronts of 16# and 1008# were conducted.
应用哈特曼波前传感器测量了准直平行光通过低速热射流流场后的畸变波前时间序列,对该波前时间序列进行了本征正交分解(POD)和低阶近似研究,对比研究了16#,1008#数据点处的低阶近似波前时间序列和测量波前时间序列。
3.
The orthogonal decomposition and low dimensional approximation of turbulent structures are investigated, and a pattern identification method based on orthogonal decomposition is suggested.
对湍流结构的正交分解与低阶近似进行了探讨 ,并在正交分解的基础上建立了湍流相干结构相干模式的识别方法 。
4) degraded and approximate model
降阶近似模型
1.
Based on degraded and approximate model of main steam pressure and linear quadratic optimal control theory, the LQ sub-optimal regulation strategy is presented.
基于主蒸汽压力降阶近似模型和二次型最优控制原理,给出了主蒸汽压力的LQ次优调节策略。
5) fifth-order approximationH
五阶近似
6) stepped approximation
阶梯近似
1.
Analysis of stepped approximation for a novel truncated circular wave guide by using straight-line method;
新型截断圆形波导的阶梯近似直线法分析
补充资料：二氧化双环戊二烯B阶树脂模塑料
分子式：
CAS号：
性质：又称二氧化双环戊二烯B阶树脂模塑料。以二氧化双环戊二烯B阶树脂为基料配制的能采用模塑方法成型的配混料。产品性能为：弯曲强度110MPa，冲击强度5.4kJ/m2；马丁耐热240℃；体积电阻率1.3×1016Ω·cm，介电强度24.5MV/m。由二氧化双环戊二烯B阶树脂，用石英粉等作填料，再加脱模剂配混制得。可用模塑法制成耐热、耐候制品用于军工和民用方面。
CAS号：
性质：又称二氧化双环戊二烯B阶树脂模塑料。以二氧化双环戊二烯B阶树脂为基料配制的能采用模塑方法成型的配混料。产品性能为：弯曲强度110MPa，冲击强度5.4kJ/m2；马丁耐热240℃；体积电阻率1.3×1016Ω·cm，介电强度24.5MV/m。由二氧化双环戊二烯B阶树脂，用石英粉等作填料，再加脱模剂配混制得。可用模塑法制成耐热、耐候制品用于军工和民用方面。
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