查询词典 characteristic index

Because change of volume reflected eroding process of watershed and surface change reflected change of topography surface, this model described relationship between watershed topograph and erosion.iv As a quantitative index of wateshed topography, topograph fractal demension can represent surface shape information of watershed topography in the round. Reseach find that watershed model and actual watershed show good fractal character. Topography fractal dimension related with process of development of watershed physiognomy and represented degree of watershed development, v Sediment yield intensity of watershed model reflected erosion characteristic of watershed model in different development phase.

流域模型产沙强度的变化反映了流域模型在不同发育阶段的侵蚀特征，模拟试验研究结果表明：在整个流域模型地貌地貌的发育过程中，其产沙强度呈现由小到大，然后又逐渐减小的总体趋势，流域模型单位降雨产沙率及平均输沙率与地形分维数表现为Gaussian模型关系，其关系形式与结论3中相对体积和表面积之间关系相似，进一步说明了以地形分维数表达地形变化的合理性。

The CVD is an important index to indicate tree diameterdifferentiating.On basis of dynamic change and tendency of CVDamong trees in stand,three models of square CVD are proposed.i.e.,basic model,stand factor model,and thinning effects model.All threemodels are of mechanism,asymptotic characteristic,and invariance forprojection length.Futhermore,there are compatiability and extremevalues in thinning effects model for thinned and unthinned stands.

直径变动系数是描述林木直径分化的重要指标，根据林木直径变动系数的动态变化和趋势，本文提出了直径变动系数平方动态变化的三个模型：基本模型，与林分因子相关的模型，考虑间伐效应的模型，上述三个模型均具有一定的机理性、渐近性和步长不变性，特别是考虑间伐效应的模型为间伐林分和未间伐林分的相容性模型，它还具有相容性和极值性。

Methods 224 patients with liver biopsy and a positive HBsAg were included in this study. The AUROC of AST、ALT、AST/ALT and APRI were identified by using receiver operating characteristic curves. Sensitivity, specificity, positive and negative predictive values, and Youden Index of APRI at optima cut-off were calculated.

调查224名乙肝表面抗原阳性的乙肝患者，利用ROC曲线分析AST、ALT、AST/ALT和APRI的面积，判断APRI的最优截断点并计算不同标准的灵敏度、特异度、阳性预测值、阴性预测值、Youden指数。

Have put forward a set of newly and applicable evaluation index system on the basis of the characteristic of microcirculation.

基于城市交通微循环特点提出了一套全新的适用城市交通微循环的评价指标体系。

The measuring method for refractive index dependence on temperature and for dispersion characteristic of the fluorinated polyimide film is also reported

同时报道了含氟聚酰亚胺薄膜波导的制备工艺及其温度特性和色散特性的测试。

The results of the analysis show: From the 1997 to 2005, drive the dint index number is divided into two obvious stages variety characteristic; And the population, economic develop, urbanization, industrializes the related social economic factor is land use change of mainly drive the factor.

分析结果表明：从1997年到2005年，与人口结构、经济发展和技术相关的社会经济因素是土地利用变化的主要驱动因素。

Firstly, according to National standard《Limits and measurement methods for emissions f rom light_duty vehicles》and many related technique characteristic parameters of light_duty vehicles, the fuction and technique index of robot driver were established which include maximum track deviation, maximum travel distance and maximum control force of the accelerator leg, brake leg, and clutch leg and gear shift arm.

其功能及技术指标包括油门机械腿、离合机械腿、制动机械腿和换档机械手的最大轨迹偏差、最大行程及最大控制力等。

The characteristic of the dairy cow thermoregulation was base on environment and nutrition administration technology. Study regressions of dairy cow physiology on ambient temperature, effective temperature and temperature-humidity index, the difference between the high and low yield dairy cow of the circadian rhythm about thermoregulatory at hot summer, evaluated the efficiency of half open and open dairy barn preventing heatstroke, evaluated the efficiency of temperature dropdown by sprinkler and air-cooling fan. The thesis was described in the following three sections.

奶牛体温调节特性是环境与营养调控技术的依据，本文从高温季节环境温度、体感温度和温湿指数与奶牛生理反应的关系，温热环境和体温调节特性的昼夜差异，高、低产奶牛体温调节特性，牛舍环境特征及其冷风机和喷淋降温效果等方面揭示荷斯坦奶牛的体温调节特性。

Viscosity index improvers, also known as viscosity modifiers, are specially developed polymers that are used to change the viscosity characteristic s of the oil

粘度指数改进剂也称为增稠剂，是经过专门设计的聚合物，用来改变润滑油的粘度特性

Based on geographic characteristic, current status of social and economic development of Chun'an county and analyses the results of several plan for forest classification, technical index for forest classification of Chun'an county is suggested.

根据淳安县林地的自然特点、社会经济发展现状和分析三种分类方案的结果的基础上，提出了淳安县森林分类的技术指标。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐