不变二次估计
invariant quadratic estimates
非负二次估计
nonnegative quadratic estimators
admissibility
线性或二次估计
linear or quadratic approximation
交直流潮流计算
AC-DC power flow calculation
Dean涡(二次流)
alkali activated cementitious material
部分二次二阶矩法
Part Second Order and Second Moment Method
电流二次回路
current secondary circuit
TA secondary circuits
二次二阶矩
quadratic second ordered moment
二次二阶矩法
Second order second-moment method
Sorm
二次二阶矩方法
the method of quadratic and two ranks quadrature