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土壤调查
释义
土壤调查
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土壤调查
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soil survey
土壤调查
以确定土壤类型及其边界为主要目的和内容的专业活动。以土壤地理学理论为指导,通过对土壤剖面形态及其周围环境的观察、描述、记载和采样化验,对土壤的发生、发育、演变、分类、分布、肥力和质量进行分析、判断,并勾绘出所有土壤类型的边界。土壤调查的基础是土壤分类。对于土壤调查活动来说,土壤分类系统是必须具备的。广义的土壤调查还包括对各种土壤性状及其变化进行确定的专业活动。具有突出的野外实地研究土壤的特征,是土壤研究的一种基本方法。
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ski-jump spillway
Skikda
skill
skilled labour and unskilled labour
skilled rate
skilled worker school
skill-grading system for athletes
skill in wielding various weapons
skill of museum public relations
skills competition of China surveying,mapping and geoinformation industry
skills in 18 schools of Wushu
skills in tossing one’s moustaches and beards
skills of Chinese opera performance
skills of playing handkerchiefs
skills of swinging hair in opera
skills of waving long pheasant tail feathers in opera
skills of waving water sleeves in opera
skills toward employability and productivity
skil paintings on Zaju opera of Song Dynasty
skim
skimmed milk powder
skimmer
skin
skin absorption
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