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- desertification land control 沙漠化土地治理
- Desertification changing trend is that the desertification land area expanded and desertification degree reduced. 变化趋势是沙漠化面积增加,程度减轻。
- The desertification land of the Ali plateau has the high-cold and arid landscape and the fragile bionomics property. 阿里高原沙漠化土地具有高寒干旱景观特色和脆弱的生态学属性。
- The analysis to sandy desertification land types shows that the moving sand dune decreases, semi-fixed sand dune and fixed sand dune increase. 从沙化土地类型上分析，流动沙地面积减少，半固定、固定沙地面积增加。
- The system brings desertification land information into spatial environment and make it more direct to view, more imaginal and more convenient to analysis. 该系统将沙化土地信息纳入其所在空间环境当中,使其更加直观、形象,便于应用分析,同时为沙化土地监测和规划提供一个辅助决策手段。
- The vegetation degeneration and as sart result that the most serious desertification and the serious desertification land extend area, relatively the area of low-grade desertification declines. 植被退化加之开垦使得极重度、重度沙化土地面积扩大，中轻度沙化土地面积相对减少。
- This paper points out the problems in fatering desertification land in Duerbote Mongolian nationality autonomous county according to the land supervision.It also puts forward relevant countermeasures. 本文通过对杜尔伯特蒙古族自治县土地的监测,掌握了该地区土地在沙化治理过程中存在的主要问题,并对此提出了相应对策。
- Rescues the city at present “to deregulate” in the tendency day by day obvious situation, strengthens the land control is necessary. 本页内容未经书面授权许可，不得转载、复制或在非中国证券网所属服务器建立镜像。
- Deserts and Desertification Land in Inner Mongolia 内蒙古自治区的沙漠及沙漠化土地
- Desertification land information system ( LIS ) 荒漠化土地信息系统
- Applying the direct feedback linearization (DFL) method to design the aircraft automatic landing control system model that is overall non-linearization. 摘要应用直接反馈线性化的方法来设计非线性飞机模型自动着陆全面控制系统。
- Development and Countermeasures for Prevention and Control of Wind Eroded and Desertification Land of Liaoning Province 辽宁省风蚀沙化土地的发展与防治对策
- Based on the characteristics of flying wing UAVs, crosswind landing control systems were designed through the crabbed method and the side-slipping method. 摘要针对飞翼无人机的特性，利用侧航法和侧滑法设计了侧风着陆控制系统，仿真了系统抗侧风干扰的能力并进行了对比分析。
- Keywords desertification land;fathering;problems;countermeasure; 土地沙化;治理;问题;对策;
- different types of desertification lands 不同类型土地沙漠化
- Present aircraft ALCS (automatic landing control system), usually employing PID control, appears unable to meet the high landing precision required by aircraft with long flexible wings. 针对大展弦比这种对侧向着陆精度要求很高的飞机,设计了一种经典PID控制器加预测控制器的分层控制系统。
- The land is laid down with red or white clover. 这块土地种上了红花和白花苜蓿。
- The place used to be a stretch of barren land. 早先这里是一片不毛之地。
- Night Everlasting envelops the lands controlled by the Undead, allowing Nicolai to rise again and again. 黑夜驱之不散地笼罩着这片受亡灵控制的大陆，尼科莱因此得以一次又一次的复活。
- Swans are surprisingly awkward on land. 天鹅在陆地上笨得出奇。
