归一化系数,normalized coefficient
1)normalized coefficient归一化系数
1.Supported by the three periodic data of Chinese Resources and Environment Database,at the meantime updating the remote sensing data of land use information in Hubei province using the 2005 TM image,to calculate the provincial normalized coefficient of the year of 1995、2000 in Hubei province and study on different scales of normalized coefficients.在中国资源环境数据库三期数据支撑下,利用2005年TM影像对湖北省土地利用信息的数据遥感更新,计算出1995年和2000年两个时期的湖北省省级生物丰度归一化系数,并对不同尺度的归一化系数进行分析和研究。
2.Based on Chinese Resources and Environment Database,the vegetation coverage index for each county and its provincial normalized coefficient of 1995 and 2000 of Hubei province are calculated.以中国资源环境数据库为支撑,计算出1995和2000年湖北省各市县植被覆盖指数及省级归一化系数
3.We quantilatively analyzed the impact of the different data sources and normalized coefficient on evaluation result of the eco-environment quality.通过流域和市域的生态环境状况评价,对《生态环境状况评价技术规范(试行)》(HJ/T192-2006)在实际应用中存在的问题进行探讨,量化分析了不同数据源和归一化系数对评价结果的影响,探讨了影响基础数据准确性的因素,提出了提高基础数据准确性及合理选取归一化系数的方法。
英文短句/例句

1.Normalige coefficient of radial wave function of three dimensional harmonic oscillator;三维各向同性谐振子径向波函数的归一化系数
2.Analysis Model for Surface Soil Moisture Based on FONDVI基于分数阶植被归一化系数的表层土壤湿度分析模型
3.Tire-road friction coefficient estimation based on normalized tire model基于归一化轮胎模型的路面附着系数观测
4.Normalized Difference Vegetation Index归一化差异植被指数
5.Regression estimates: including intercept and coefficients for linear, quadratic and correlation coefficient.2?归参数:含截距、一次、二次?归参数与相关系数。
6.A Study of Normalization of Directional Effects in Vegetation Index Using BRDF of Typical Crops Form MODIS Data;MODIS植被指数角度归一化与地表参数遥感反演系统实现
7.Relationship between Spring Rainfall in China and Winter Normalized Difference Vegetation Index in the Southeast of Tibetan Plateau我国春季降水与青藏高原东南部冬季归一化植被指数变化的关系
8.Mapping of spectral coefficients for normalized Haar transform in (0,1) coding and the transformation between to K map(0,1)编码的归一化Haar变换谱系数的图形表示及其与K图的转换
9.Temporal variation of vegetation NDVI and its relations to climate factors in Tianjin area天津地区归一化植被指数时间动态及其与气候因子的关系
10.Relationships between Horqin meadow NDVI and meteorological factors科尔沁草甸草地归一化植被指数与气象因子的关系
11.The Coefficient Estimation of Least Absolute Deviation Regression and Implementation in MATLAB;最小一乘回归系数估计及其MATLAB实现
12.Small sample properties of a kind of linear estimation in linear regression model回归系数一类线性估计的小样本性质
13.The Normalized Amplitude Ratio Function Applied in Frequency-domain CSEM归一化比例函数在频率域CSEM中的应用
14.Image Normalization Based Robust Digital Watermarking Scheme in Contourlet Domain基于图像归一化的Contourlet域数字水印方案
15.The normalized wave functions of the particles bound in one-dimensional square potential wells;一维方势阱中束缚态粒子的归一化波函数
16.Hatching Analysis of the seedling chicken --The Relation of the Certified Hatching Products with the total Hatching Products and Survival Hatching Products by Regression Analysis from Practice;种鸡孵化分析——正品数与入孵蛋数、存株数关系的回归分析
17.New reduction method for the differential-algebraic system微分代数方程系统的一类新的归约方法
18.ADMISSIBILITY OF LINEAR ESTIMATORS OF GENERAL REGRESSIONAL COEFFICIENTS UNDER QUADRATIC LOSS二次损失下一般的回归系数线性估计的容许性
相关短句/例句

normalization coefficient归一化系数
1.Normalization coefficients of four kinds of raising and loweringoperators of an N-dimemsional hydrogen atom;N维氢原子四类升降算子的归一化系数
2.An approach for deriving the normalization coefficients of raising and lowering operators about primary quantum number of an k?dimensional hydrogen atom via the virial theorem and operator calculating was presented.提出了一种计算多维氢原子主量子数升降算符的归一化系数的方法。
3)asymptotic normalization coefficient渐进归一化系数
1.In addition,we derived the asymptotic normalization coefficient(ANC) of 14O by analyzing the 13C(d,p)14C angular distribution based on charge symmetry of mirror nuclei,which agrees with the experimental result.9 MeV的13N(d,n)14O反应的角分布,导出了14O基态渐进归一化系数(ANC)为(29。
4)unified stacking factor归一化堆叠系数
1.Two parameters, one called the unified stacking factor (USF) and the other called the circuit virtual stacking factor (VSF), are defined based on the relationship between the transistor stacking effect and the leakage current of standard cells.为了解决利用晶体管级电路模拟分析CMOS电路静态功耗时模拟时间随电路规模增大迅速增加的问题,在分析晶体管堆叠效应对标准单元泄漏电流影响的基础上,定义了归一化堆叠系数和电路等效堆叠系数的概念,提出了基于电路有效堆叠系数的静态功耗评估模型。
5)normalized partition coefficeient归一化划分系数
6)Normalized potential coefficient归一化电位系数
延伸阅读

阀门技术注重流量系数和气蚀系数阀门的流量系数和气蚀系数是阀的重要参数,这在先进工业国家生产的阀门资料中一般均能提供。我国生产的阀门基本上没有这方面资料,因为取得这方面的资料需要做实验才能提出,这是我国和世界先进水平的阀门差距的重要表现之一。3.1、阀门的流量系数
阀门的流量系数是衡量阀门流通能力的指标,流量系数值越大,说明流体流过阀门时的压力损失越小。
按KV值计算式
式中:KV—流量系数
Q—体积流量m3/h
ΔP—阀门的压力损失bar
P—流体密度kg/m3
3.2、阀门的气蚀系数
用气蚀系数δ值,来选定用作控制流量时,选择什么样的阀门结构型式。
式中:H1—阀后(出口)压
H2—大气压与其温度相对应的饱和蒸气压力之差m
ΔP—阀门前后的压差m
各种阀门由于构造不同,因此,允许的气蚀系数δ也不同。如图所示。如计算的气蚀系数大于容许气蚀系数,则说明可用,不会发生气蚀。如蝶阀容许气蚀系数为2.5,则:
如δ>2.5,则不会发生气蚀。
当2.5>δ>1.5时,会发生轻微气蚀。
δ<1.5时,产生振动。
δ<0.5的情况继续使用时,则会损伤阀门和下游配管。
阀门的基本特性曲线和操作特性曲线,对阀门在什么时候发生气蚀是看不出来的,更指不出来在那个点上达到操作极限。通过上述计算则一目了然。所以产生气蚀,是因为液体加速流动过程中通过一段渐缩断面时,部分液体气化,产生的气泡随后在阀后开阔断面炸裂,其表现有三:
(1)发生噪声
(2)振动(严重时可造成基础和相关构筑物的破坏,产生疲劳断裂)
(3)对材料的破坏(对阀体和管道产生侵蚀)
再从上述计算中,不难看出产生气蚀和阀后压强H1有极大关系,加大H1显然会使情况改变,改善方法:
a.把阀门安装在管道较低点。
b.在阀门后管道上装孔板增加阻力。
c.阀门出口开放,直接蓄水池,使气泡炸裂的空间增大,气蚀减小。
综合上述四个方面的分析、探讨,归纳起来对闸阀、蝶阀主要特点和参数列表便于选用。两个重要参数在阀门运用中 。