单词	多级阶层
释义	多级阶层multilevel hierarchy
随便看	non-linear programming nonlinear programming nonlinear programming--nlp nonlinear programming，nlp nonlinear propagation nonlinear propagation in fiber nonlinear property nonlinear pulse propagation nonlinear quantization nonlinear quasi-geostrophic flow nonlinear raman effect nonlinear reactance non-linear reactance amplifier non-linear receiver non-linear recombination nonlinear refractive index non-linear regression nonlinear regression nonlinear regression analysis non-linear relationship nonlinear relationship nonlinear renewal theory non-linear resistance nonlinear resistance non-linear resistance regulator