quadratics

基本解释

Each small quadrat must be more homogeneous than the sociation as a whole.
每个小样方必须比整个基群丛更为统一。
The main topics are: determinants, matrices, rank of a matrix, vector spaces, linear equations, eigenvalues and eigenvectors, quadratics.
本课程的基本内容有行列式、矩阵、线性方程组、矩阵的特征值与特征向量。
Finally,we measured agronomical parameters and spectrum data at every major quadrat,and established the setting database.
在各类样地上，分别进行农学参数、环境背景参数的观测和波谱特征的测试。最后进行数据整理和背景数据库的建立。
The root nodules maximums occur in April except for A. ordosice quadrat, and RLD of coarse roots are far little than those of fine roots.
挖沟分层取样研究表明，与柠条相比油蒿具有较高的根冠比；
The quadrat sampling technique is mostly used in plant ecology to study the distribution and abundance of species in plant communities.
其内部的生物体被标记，样方抽样技术多用于植物生态学领域，用来研究某一植物群落中物种的分布及其含量的多少。