dcca meaning in Chinese
二氯异氰脲酸
Examples
- So if dca combines with classified methods , the ordination effect on samples and species is better than that of dcca and cca . 2 . fso study on plant communities : we applly fuzzy set ordination ( fso ) to analyze the environmental factors and vegetation data
植物群落的模糊数学排序研究：运用模糊数学排序对样地的环境因子和植被数据进行了直接梯度分析，结合twinspan分类结果，与dcca比较，模糊数学排序直观的得出了环境因子和植物群落间的关系，分辨率较高。 - 1 . study on classifying and ordination of plant communities : acording to the ecological relationship between plant species , plant communities and environment , we study the communities types , structure and distributing pattern of midland of taihang mountain by using twinspan , dca , cca , dcca and so on
植物群落的分类和排序研究：应用twinspan分类和dca 、 cca 、 dcca等方法，从植物种、植物群落与环境的生态关系方面，研究了太行山中段各群落类型、结构及分布格局。 - By using of the richness , diversity and evenness indices , combined with twinspan , dca , dcca , multi - factors regression , correlation analysis techniques and so on , species diversity and diversification mechanism were studied . the communities were classified into eight types by twinspan . the first axis of dca indicated basically the diversification of soil water , while the second axis indicated basically the disturbance degree by people . the correlations between n , organic matter , elevation and the first axis are negative association , and the others are positive
通过丰富度指数、物种多样性指数和均匀度指数，结合twinspan 、 dca 、 dcca排序，多元回归和相关分析，研究了物种多样性及其变化机制，把植物群落分为8个群落类型；物种多样性指数的dcca第一轴基本上反映了土壤水分的变化，第二轴基本上反映了人类对群落的干扰程度，物种多样性指数随土壤水分的增加而增大，随人类的干扰程度的增加而减小。 - Meanwhile , we proved that the major factor that determines the distribution of plants in china is the primary productivity . the cold index ( the lowest temperature ) plays a more important role than the highest temperature and the annual mean temperature in restricting the diversity of plants
Dcca和cca排序也显示了和dca一致的结果，同时证明，决定中国陆地植物多样性分布格局的环境因素主要是初级生产力，而寒冷指数(即低温)对多样性的限制作用要大于高温和年均温的作用。 - The preparation of optically active composite is a promising alternative to obtain a kind of new and competitive sensing membrane for fiber optic sensors , and has attracted the global attention . in this thesis , the modified sol - gel sensing membranes based on fluorescence quenching have been prepared by using tetraethoxysilane ( teos ) and dimthyldimethoxysilane ( dds ) as the main material , formamide as the drying control chemical additive ( dcca ) , ru ( phen ) 3cl2 and ru ( bpy ) 3cl2 as the indicator . this kind of membranes is crack - free and has low indicator - leaking rate
本文以四乙氧基硅烷( teos ) 、二甲基二乙氧基硅烷( dds )为主要原料，以甲酰胺为控制干燥剂，二价钌离子络合物钌( ) ?联吡啶( ru ( bpy ) _ 3cl _ 2 )和钌( ) ?菲咯啉( ru ( phen ) _ 3cl _ 2 )为荧光指示剂，采用改进的溶胶凝胶技术，通过添加控制干燥剂和有机掺杂两种手段，制备了基于荧光猝灭原理的光纤氧敏感膜。