Soil texture class 土壤质地组别
Class A soil hydrometer 甲种土壤计 ; 乙种土壤计
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。
Recently we held a class meeting to discuss the problem of "Good care environment, protect the earth". As we can see, the climate anomalies in the air, water, soil and other serious pollution.
最近我们举行了一个类会议来讨论这个问题的“爱护环境，保护地球”我们可以看到，气候异常的空气、水、土壤和其他严重污染。
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