1) dynamic change with time
时间动态变化
3) Temporal and Spatial Dynamic Variation
时空动态变化
1.
Temporal and Spatial Dynamic Variation of Groundwater and Ecological Impact Research of Fukang;
阜康市地下水时空动态变化及生态影响研究
4) time scale distortion
时间变态
1.
Effectiveness of the current sediment flushing measurements is evaluated,and methods are proposed to reduce test errors due to the time scale distortion for unsteady flow running during the sediment flushing experiments.
该文采用具有不同变态率的概化河工模型,研究了三峡枢纽上游引航道非恒定冲沙水流的流态和冲沙效果,评价了现有防淤清淤措施的效果,探讨了非恒定流冲沙中的时间变态问题的修正方法。
2.
On the basis of former researches,the direct reasons causing time scale distortion are analyzed in this paper.
河工动床模型时间变态常影响试验结果与原型的偏离程度。
5) time distortion
时间变态
1.
A series of model experiments for different time distortion rates are made in the Huaihe River model of the reach from Zhengyangguan to Huainan(Tianjiaan).
利用淮河干流正阳关至淮南田家庵段河工模型和该河段1991年实测洪水资料作为试验条件,采用真实的入出流边界条件,未作任何假定与简化,对河工模型时间变态问题开展了系列试验研究。
2.
During the river distorted model tests,the flow velocity field and dynamic field caused by geometric distortion are not completely similar,specifically shown by roughness similarity,unbalanced priming shear stress and starting velocity and time distortion.
在河工变态模型试验中,几何变态造成水流的流速场和动力场不完全相似,具体反映在糙率相似、起动切应力与起动流速不协调及时间变态等问题上。
3.
An unsteady 1-D flow and sediment model is used as a tool to study the scale effect caused by time distortion in physical models of sediment transport.
利用一维不恒定水流泥沙数学模型 ,研究泥沙实体模型试验的时间变态问题。
6) metamorphosis time
变态时间
1.
In this paper,the Branchionus plicatilis was fed yeast preincubation rotifer which enriched by six kinds of Marine Microalgae,and used the enrichment rotifer as the food of the Eriocheir Sinensis Zoea,to research the different food enriched rotifer how to influence the Zoea\'s metamorphosis time and survival rate.
实验用6株海洋微藻来强化用酵母预培养的褶皱臂尾轮虫,并将强化后的轮虫投喂中华绒螯蟹的溞状幼体,以研究使用经不同食物强化后的轮虫投喂溞状幼体对溞状幼体变态时间及成活率的影响。
补充资料:土地变化动态监测
土地变化动态监测
dynamic monitoring of land use change
tudi bianhua dongtai Jianee土地变化动态监测(dynamic~itoring of land usechange)按照一定的时间序列对土地面积、质量、分布的变化进行的调查。其目的是及时掌握土地的利用状况变化。监测的方法有连续普查和抽样调查两种。例如,1980~1983年,中国利用美国陆地资源卫星多光谱扫描图像资料进行了全国分省巧种地类的土地利用或土地覆盖调查;1993~1995年,又利用美国陆地卫星专题制图仪资料进行了全国分省、分县的6个一级类、22个二级类的土地利用现状调查。通过两次的土地利用现状普查对比,了解全国和分行政区(省、地、县)的土地利用变化,达到监测的目的。抽样调查方法按概率论原理统计推算出各类土地变化情况,具有速度快、费用低等优点,但不能定位和制图。(刘海启)
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条