依据所建立的非线性模型，获得垂直入射纵波在非线性法向变形节理处传播的透射和反射系数的解析解。
Based on the established model, the analytic resolution of transmitted and reflected coefficients is obtained when the normal incident P-wave propagates to the nonlinear normal deformative joint.
二向反射分布函数BRDF模型把植物密度和光学特性区别对待，因而它有助于植物状况的客观评估。
Bidirectional reflectance distribution function (BRDF) models treat plant density and optical properties differently and, therefore, can help to assess plant condition objectively.
二向反射分布函数BRDF模型把植物密度和光学特性区别对待，因而它有助于植物状况的客观评估。
Bidirectional reflectance distribution function (BRDF) models treat plant density and optical properties differently and, therefore, can help to assess plant condition objectively.
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