DCCA
- abbr.国防合同审计局(Defense Contract Comptroller Agency);设计修改成本分析(Design Change Cost Analysis)
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DCCA Order Applied in Environment Explaining of Watershed Runoff on Loess Plateau
DCCA在黄土高原流域径流环境解释中的应用
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DCCA ordination showed that soil organic matter content was the decisive factor to the development of communities .
DCCA排序进一步表明了土壤有机质含量是所有因子中对植物群落发展起决定性作用的主要环境因素。
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Using suitable drying control chemical additives ( DCCA ) and high relative humidity drying is effective to prevent crack .
选用合适的干燥添加剂(DCCA),结合准平衡干燥可以有效防止干燥过程中的凝胶开裂。
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A research on the felt proofing finishing of the wool knitted fabrics using DCCA protease
羊毛针织物DCCA-蛋白酶防毡缩整理研究
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The results showed : there were many fine qualities for DCCA on the image show , store , playback and post process .
结果表明数字电影冠状动脉造影在图像显示、存储、回故、后处理等方面有其优越性,且曝光量明显减少。
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Studies on DCCA of the attached diatom community in headwater rivers of Fenhe Reservoir
汾河水库水源河着生硅藻群落的DCCA研究
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After modification , DCCA and PCCA are considered to be ideal ordination methods at present .
CCA改进后的DCCA和PCCA,是现今较理想的排序方法。
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DCCA ( drying control chemical additive ) was added into sols , the SiO2 waveguide films were prepared ;
首先探讨了在传统溶胶-凝胶法制备SiO2膜的基础上,添加干燥控制剂DCCA,制得SiO2光导膜;
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Analysis of relationships between vegetation and its environmental variables . ⅱ . CCA and DCCA constrained ordinations
植被与环境关系的分析Ⅱ:CCA和DCCA限定排序
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DCCA of plots showed : Community III and community IV were higher than community I and community II in soil water content gradient .
对样方的DCCA排序分析表明:在土壤含水量梯度上,群落Ⅲ和群落Ⅳ大于群落Ⅰ和群落Ⅱ;
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It shows that PVA and neutral DCCA such as glycerol are most suitable for zirconium sol system selected in this paper .
结果表明,在本文所采用的锆溶胶体系中,以PVA为增稠剂、丙三醇等中性物质为干燥控制剂最为合适;
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Dca , cca and DCCA ordination analysis of salty meadow community in hutubi , Xinjiang
新疆呼图壁盐化草甸群落的DCA,CCA及DCCA分析
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H2O2 and DCCA were used as pretreatment agents to study the effects on shrink-resistance performance of wool fabric treated by proteases .
采用H2O2、DCCA预处理结合蛋白酶整理的加工方法,探讨了不同处理工艺对毛织物防毡缩效果的影响。
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Detrended canonical correspondence analysis ( DCCA ) method to analyze the relationship between the different transplanting deal with climate factors and tobacco smoking indicators .
采用去势典范对应分析(DCCA)方法,分析了不同移栽处理中气候因子与烟草评吸指标之间的关系。
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The studies indicate that CCA and DCCA are applicable in florology and phytogeography .
本文研究表明将DCCA和CCA应用到植物区系地理学研究上是可行的。
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The salty meadow community of Hutubi , Xinjiang was analyzed by DCA , CCA and DCCA .
本文应用DCA、CCA及DCCA排序技术对新疆呼图壁盐化草甸群落进行了分析。
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DCA ordination is superior to CCA and DCCA .
DCA排序效果优于CCA和DCCA;
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The map shows the residence locations by District Council Constituency Area ( DCCA ) of415 donors giving blood on a Sunday .
图示某星期天的捐血者人数分布。当天共有415名市民在5间捐血站捐血。
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The results showed that the first four DCCA axes were significantly correlated to agricultural land ratio , landscape diversity index , forest land ratio , and landscape contagion index .
结果表明,DCCA排序的前4轴分别与农业用地比率、景观多样性指数、森林比率显著相关。
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The spatial pattern of the community species presented obvious collective pattern in DCCA taxis , which could be divided into different swarm and reflect significant correlation with environmental factors .
在DCCA排序图上,樟子松群落及物种的空间分布呈明显的聚集格局,可划分出不同的类群,并反映与环境因子之间具有密切的关系。
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The result of DCCA ordination showed that the distribution of vegetation in the region is affected synthetically by soil moisture , soil nutrient and micro-topography .
DCCA排序结果表明,该地区植被的分布是土壤水分、土壤养分和微地形三者综合作用的结果;
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On the basis of experiments , precipitation titration based on Volhard 's method is established to analyse the reaction of DCCA with tyrosine residue phenol .
在实验的基础上确立以佛尔哈德法为基础的沉淀滴定法,并用以分析DCCA与酪氨酸残基&苯酚的反应情况。
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The relationship between information of vegetation and climate variables in Loess Plateau in China is analyzed by using technique of GIS combined with DCCA ( detrended canonical correspondence analysis ) .
排序是植被与环境关系分析的重要手段。利用地理信息系统技术(GIS)结合除趋势典范对应分析对黄土高原地区植被与气候关系进行了研究。
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3 species groups relatively concentrated are shown in the analysis of relationship between the rare species . Altitude , position and slope are the chief factors controlling their spatial pattern showed in DCCA ordination .
4种间关系分析反映了3个相对集中的种组,DCCA排序表明它们分布格局的主要分异因子是海拔、坡位和坡度。
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With the method of Detrended Canonical Correspondence Analysis ( DCCA ), we studied the relationship between the types of spatial and temporal variation of soil moisture content and the environmental factors at the scale of catchment .
采用DCCA排序,研究了流域尺度上土壤水分的时空分异类型及与环境因子的关系。
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The relationship between species diversity and altitudinal gradient for evergreen broad-leaved forests in Simian mountain , Chongqing of China was studied by the combination of DCCA ordination and altitude ordination .
采用DCCA排序和海拔高度排序相结合的方法,对四面山常绿阔叶林群落物种多样性和海拔高度的关系进行了研究。
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This series of maps shows the monthly number of reported cases by district and the cumulative number by DCCA ( District Council constituency area ) between Day One ( 1 may ) and the end of September .
这一辑地图显示2009年五月至九月期间,各区的猪流感每月报告数,以及各区议会分区的累积感染人数。
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Species distribution is found to be greatly influenced by slope positions , longitude and latitude , annual precipitation and precipitation from March to May through detrended canonical correspondence analysis ( DCCA ) . 3 .
去势典范对应分析(DCCA)发现坡位、经纬度、年降水量和3-5月降水量对物种分布产生影响。
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CCA , DCCA . The results are as following : plant communities are classified into 12 types by TWINSPAN , and they reflect changes of two environmental gradients , time of succession and water conditions of soil .
结果如下:用TWINSPAN进行的数量分类,共划分出12个群落类型,分类矩阵图明显反映出演替时间与土壤含水量两个环境梯度。
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The variation patterns of species diversity in evergreen broad-leaved forests in the Jinyun Mountain were studied and the relationship between soil factors and species diversity was analyzed using detrended canonical correspondence analysis ( DCCA ) method .
探讨了缙云山常绿阔叶林物种多样性的变化特征,并运用去势典范对应分析(DCCA)方法,分析了不同样方中土壤因子与群落多样性指数之间的关系。