1) spatial characteristic variable
空间特征变量
2) spatial variability
空间变异特征
1.
Studying on the spatial variability of soil N and organic matter is helpful to develop optimal fertilization and management practices to control the non-point sources of N pollution.
在地理信息系统的支持下,利用地统计学方法,初步分析杭埠河流域土壤全氮和有机质的空间变异特征,并利用Kriging插值法绘制了土壤全氮和有机质的空间分布图。
2.
The results indicated that soil salinity and moisture for all depth layers were generally high,and salt accumulation at the surface soil layer was significant;Soil salinity for all depth layers exhibited moderate spatial variability,and soil moisture of surface layer exhibited moderate spatial variation while.
以黄河三角洲地区典型地块为研究区,运用经典统计学和地统计学相结合的方法研究了不同深度土层盐分和含水量的空间变异特征。
3.
Using geostatistical and GIS methods,a case study on Dengxia catchment of hilly area in southern Jiangsu Province was conducted to examine the spatial variability characteristics of soil nutrients in the topsoil(0~20 cm).
采用地统计学与GIS相结合的方法,以苏南山丘区邓下小流域为研究区,研究了表层土壤(0~20 cm)的pH值、全氮、全磷和速效钾等4种养分的空间变异特征。
4) spatial signature vector
空间特征向量
6) term vector space
特征词向量空间
1.
In this method, the term vector space of text is described by automatic word segmentation.
这种算法主要利用自动分词得到各文献的特征词向量空间 ,并考虑到人工标引在分类中的关键作用 ,得到综合了特征词 TF和 IDF权重的分类准则。
补充资料：变量与变量值
可变的数量标志和所有的统计指标称作变量。变量的数值表现称作
变量值，即标志值或指标值。变量与变量值不能误用。
变量值，即标志值或指标值。变量与变量值不能误用。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条