word英文文献 With the development at full speed of the microelectric technique, the performance of the one-chip computer improves rapidly, demonstrate the outstanding advantage in the operation, logic control, intelligent respect, replaced and enlarged
SWAT（Soil and Water Assessment Tool）是由美国农业部（USDA）的农业研究中心（ARS，Agricultural Research Service）Jeff Amonld博士1994年开发的。模型开发的最初目的是为了预测在大流域复杂多变的土壤类型、土地利用方式和管理措施条件下，土地管理对水分、泥沙和化学物质的长期影响。它是一种基于GIS基础之上的分布式流域水文模型，近年来得到了快速的发展和应用，主要是利用遥感和地理信息系统提供的空间信息模拟多种不同的水文物理化
This is a book not about the decline of America but rather about the rise of everyone else. It is about the great transformation taking place around the world, a transformation that, though often discussed, remains poorly understood. This is natural
Gene mapping is used in experimental genetics to improve the hardiness or productivity of animals or plants of agricultural value, to explore basic mechanisms of inheritance, or to study animal models of human inheritance. In human populations it is
Drought is one of the most important environmental constraints limiting plant growth and agricultural productivity. To understand the underlying mechanism of drought tolerance and to identify genes for improving this important trait, we conducted a
开发者: Dr. Jeff Arnold for the USDA Agricultural Research Service (ARS)-美国农业部农业研究局 应用方向:评价土地利用管理等人类活动对流域水循环、泥沙、农业污染物质迁移的长期影响和作用 特点： 属于物理－概念结合的模型，具有很强的物理基础，能够考虑天气、土壤性质、地形、植被、人类土地管理的综合作用，同时能够灵活处理各种复杂条件； 适合于长时间尺度的水文循环和物质循环研究，而非短时期水文预报； 适合于宏观尺度的模拟；
Foreword—This series of SAE Recommended Practices have been developed by the Truck and Bus Control and Communications Network Subcommittee of the Truck and Bus Electrical Committee. The objectives of the subcommittee are to develop information repor
The Mechanisms of Agricultural Risks Management and Its Study Frame，王健，，This paper started from the understanding of the concept of the agricultural risk. It takes asymmetric information and existed uncertainties as the risk occurring mechanisms. T
Chinese Agricultural Natural Risks and Real Background of Uncertainty，王健，，The agriculture is a typical risk industry. The agricultural risk can be summed up two big kinds roughly. One involves the agricultural production process, which is called th
Impacts of Trade Liberalization on China’s Agricultural trade，Hamdia Ahmed，，This paper examines the china’s WTO accession commitment on agricultural product, the agricultural policy and agricultural trade policies, the impact of tariff-rate quotas (T
A highly sensitive, rapid and convenient biosensor based on film bulk acoustic resonator has been developed for detection of pesticide residues in agricultural products. When the pesticide molecules are bound to the immobilised antibodies on the reso
