quadratics

基本解釋

Each small quadrat must be more homogeneous than the sociation as a whole.
每個(gè)小樣方必須比整個(gè)基群叢更為統(tǒng)一。
The main topics are: determinants, matrices, rank of a matrix, vector spaces, linear equations, eigenvalues and eigenvectors, quadratics.
本課程的基本內(nèi)容有行列式、矩陣、線性方程組、矩陣的特征值與特征向量。
Finally,we measured agronomical parameters and spectrum data at every major quadrat,and established the setting database.
在各類樣地上，分別進(jìn)行農(nóng)學(xué)參數(shù)、環(huán)境背景參數(shù)的觀測和波譜特征的測試。最后進(jìn)行數(shù)據(jù)整理和背景數(shù)據(jù)庫的建立。
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.
挖溝分層取樣研究表明，與檸條相比油蒿具有較高的根冠比；
The quadrat sampling technique is mostly used in plant ecology to study the distribution and abundance of species in plant communities.
其內(nèi)部的生物體被標(biāo)記，樣方抽樣技術(shù)多用于植物生態(tài)學(xué)領(lǐng)域，用來研究某一植物群落中物種的分布及其含量的多少。