growth formula

用法例句

To improve the precision of tree biomass parameter calculation,this paper explicates the principle,method and process to estimate the parameters of tree biomass by the nonlinear least square according to the formula of allometry method(power function).

为了提高林木生物量参数的计算精度,根据林木相对生长公式(幂函数),阐述用非线性最小二乘法求解生物量参数估值的原理、方法和过程;给出计算参数估值之方差与协方差的公式;揭示幂函数对数线性化回归的本质。