There were many ups and downs in the earth's numbers . 世界人口数量变化起伏不定。
The change of mosquito - density was positively correlated with temperature 蚊数量变化与其环境温度变化呈正相关关系。
Analysis of the canonical correlations between influencing factors and cultivated land amount changes based on cca 耕地数量变化及其影响因素的典型相关分析
Study on the genomic density polymorphism and the quantity of cr expressed on erythrocyte in the patients with hepatocirrhosis 型分子密度相关基因多态性与其数量变化的研究
Major trends in educational reform and development in china - a quantitative study of chinese educational policy since the mid 1980s 20世纪80年代中期以来中国教育政策数量变化研究
By focusing on the chinese migrants into canada , this paper studies the history , the numerical changes , the categories , the problems and the future of chinese migration into canada 本文着重阐述中国移民加拿大的简要历史,移民数量变化及类别、存在问题、未来发展态势。
This can happen if xml documents are parsed infrequently , or if the number of threads within your application varies widely xerces - c parsers are not re - entrant 如果不经常解析xml文档,或者应用程序中的线程数量变化很大( xerces - c + +解析器不支持再次进入) ,就会出现这种情况。
Class can be used to let other parts of the code know about changes to the fractal , whether it s a change in the number of points - which the editor uses to define the right 类可以用来让代码的其他部分知道对分形的修改,可能是点的数量变化(编辑器用点的数量为点选择器定义正确的
Microbilogical oil and gas exploration is a technique of predicting subsurface hydrocarbon distribution by means of detecting the change in amout of hydrocarbon - biting bacteria in near - surface soil 摘要微生物油气勘查是通过检测近地表土壤中噬烃菌的数量变化,预测地下油气分布的一种技术方法。
We get the probability distribution of the population by the theory and method of markovian process , and discuss the model coefficients influencing on subsistence of a population 利用马尔可夫过程的理论和方法,得到生物种群数量变化的概率分布,最后讨论了各模型参数的变化对生物种群生存的影响。