Soil texture class 土壤质地组别
Class A soil hydrometer 甲种土壤计
soil nutrient class 土壤养分等级
first-class soil 一级土壤
Class Ii Soil 二类土
soil erosion intensity class 土壤侵蚀强度分级
A good class is a fertile soil in which the student grows.
一个好的班级体是学生成长的沃土。
The system can be also used to class and recognize soil pattern from remote sensing image, and to examine and evaluate the classification precision.
该系统可以对遥感图像进行土壤类型的分类识别，并对分类精度进行监测与评价。
The results showed that nestedness is not exclusive properties of biological assemblages, mantlerock or soil catenulate structure, but can be found in a broader class of earth systems.
结果表明：嵌套性在生物群落、土被或土链结构中的性质有相似之处，即地学系统中普遍存在着嵌套性。
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