a single estimation 一次估计

single-class estimation 单类的估计

Single equation estimation 单一方程式估计

single equation estimation method 单一方程估计法

single-trial estimation 单次提取

single class estimation 单类估计

single-branch estimation 单支路估计

single station estimation 单站评估

single frequency estimation 单音频率估计

single-equation methods of estimation 单方程估计法