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Terms for subject Earth sciences containing 保持 | all forms | in specified order only
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东非地区水土保持和利用委员会East African Regional Committee for Conservation and Utilization of Soil
中华人民共和国水土保持法Law of the People's Republic of China on Water and Soil Conservation
保持水量amount of water conserved
分期投资保持受益法投资分配法separable costs, remaining benefits method
国家土壤保持计划加拿大National Soil Conservation Program Canda
国家水土保持区协会美National Association of Soil Conservation Districts
国家水土保持局新西兰National Water and Soil Conservation Organisation New Zealand
国家水土保持组织新西兰National Water and Soil Conservation Organisation New Zealand
国际水土保持信息中心英International Center for Soil Conservation Information
土地恢复和土壤保持中心印度尼西亚Land Rehabilitation and Soil Conservation Centres Indonesia
土壤保持学会美Soil Conservation Society
土壤保持局美soil conservation service
土壤保持条例soil conservation act
土壤肥力保持soil fertility maintenance
安大略省土壤保持与环境保护评估辅助计划加拿大Ontario Soil Conservation and Environmental Protection Assess Assistance Program
新西兰土壤保持协会New Zealand Soil Conservation Association
新西兰土壤保持工作者协会New Zealand Association of Soil Conservators
正常保持水位normal conservation level
水保持值water retention value
水土保持farmland and water conservation
水土保持专家系统expert system of soil and water conservation
水土保持区water conservancy district
水土保持局美division of soil and water conservation
水土保持工作条例Regulations on the Work of Water and Soil Conservation
水土保持工程措施engineering measures of soil and water conservation
水土保持技术援助计划美conservation technical assistance program
水土保持数据库data base of soil and water conservation
水土保持林业措施forestry measures for soil and water conservation
水土保持法规laws sand regulations of soil and water conservation
水土保持的生物措施biological measures for soil and water conservation
水土保持管理措施conservation land management practice
水土保持经济林economic forest for soil and water conservation
水土保持耕作conservation tillage
水土保持耕作措施tillage measures of soil and water conservation
水土保持计划conservation reserve program
维多利亚州土壤保持局澳大利亚Soil Conservation Authority of Victoria Australia
美国土壤保持学会Soil Conservation Society of America
美国土壤保持局曲线数值法Soil Conservation Service Curve Number Method
蒙哥马利土壤保持区美Montgomery Soil Conservation District

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