各向异性与分子链取向系数
anisotropy and molecular chain orientation’s coeff
铬酸-浓磷酸分解法
chromic acid-strong phosphoric acid decomposition method
各器官分配比例
distribution rate of various organs
根系密度分布函数
root distribution function
耕层土壤养分调查
investigation of topsoil nutrients
工程加权因子分配法
Engineering weighting factor distribution method
各分中值定理
integral mean value theorem