查询词典 common ratio

The common method, that all strong-correlation terms of the model are eliminated, can bring the loss in the engineering application, so the new method is proposed that the identified model reserves some correlation. The augmented matrix A is constructed by the outputΔW and the matrix S. The"determinating order based on ratio of determinant"is brought out to screen the strong-correlation terms in the structure identification. The latent root estimation is improved in screening the eigenvalues and eigenvectors. Thus the estimation precision is improved greatly.The consistence check of guidance instrument error coefficients of flight test and ground test is the purpose of flight experiment. The causes of inconsistency of the two models are analyzed. The hypothesis test of linear regression model based on F statistics is proposed to check the consistence.Finally, the instability of error coefficients is probably caused by the change of the flight environments, therefore, the relation between the error coefficients and flight environment is analyzed. The approach is presented to identify SINS guidance instrument error models and compensate the error in the segmented sections corresponding to the change of vertical acceleration of aircraft.

在结构辨识中，常用的方法由于将模型中的强相关项全部剔除而给工程应用带来损失，因此，本文提出了新的有益思想，即在保留一定相关性的基础上进行辨识：将输出向量ΔW与环境函数矩阵S构成增广矩阵A，然后采用"比定阶行列式"来剔除相关向量的方法，这样既可以尽可能多地保留了对落点影响大的强相关参数，又可以对落点影响小的强相关参数给予剔除；在参数估计中，改进了特征根估计中特征根和特征向量的筛选方法，提出"近零"准则，从而大大提高了参数估计的精度；再者，鉴于天地模型"一致性"检验是飞行试验和SINS制导工具误差系数分离的主要目的，因此，本文又深入分析了造成天地模型不一致的原因，提出了采用基于F统计的线性回归模型假设检验方法来进行捷联制导工具误差模型的天地"一致性"检验；最后，鉴于飞行环境剧烈变化可能会对惯性仪表误差系数稳定性带来一定的影响，因此本文深入地分析了SINS制导工具误差系数与外界环境的关系，提出了基于过载变化大小的分段辨识和分段实时补偿的算法。

Shown by GL-03 culture in vitro test, the ferment cultured milk has strong acid and cholate resistant ability, good adhesive, obvious inhibit to common pathogenic entero becteria, without drug tolerance factors, is a lactobacillus applicable to permanent planting of human body intestinal tract, and simultaneously the deterioration ratio of the cholesterol in vitro can be up to 56 percent; proved by the animal-test, the cholesterol-lowering cultured milk has the function of lowering serum cholesterol.

乳酸菌GL-03体外培养试验表明其有很强的耐酸、耐胆盐能力，粘附性好，对常见的肠道致病菌有明显的抑制作用，不携带耐药性因子，是一种适宜于人体肠道定植的乳酸菌，同时体外胆固醇降解率可达56％。动物试验证明降胆固醇酸乳具有降低血清胆固醇的功能。

Objective: Renal fibrosis was the common way of various of chronic nephropathy developping into Chronical renal failure Just in our country, the occurring ratio of CRF was 1-1.5 ten thousand every year, and showed raising tendency each year.

目的：肾脏纤维化是各种肾脏疾病进展到终末期肾衰竭的一个共同通路。我国慢性肾衰竭的发生率为1-1.5万／年，且有逐年上升趋势。目前尚无有效的治疗方法阻止CRF发生。

But under limited training sample size, increased dimension of remote sensing data means decreased samples/dimension ratio, which can lead to low classification accuracy if common statistic based pattern classification methods were used.

但在有限训练样本条件下，遥感数据维数的增高使样本/维数比率大大降低，采用常规的统计模式识别方法反而无法得到较好的分类结果。

Second, the discharge coefficient of ring gap, whose ratio of length and width is greater than 10, is in the area from 0.4 to 0.65 and less than that of a common orifice of a coaxial shear injector.

长宽比大于10的环缝流量系数在0.4～0.65之间，比一般直流孔的流量系数略小。

Based on the similarity of common reflection point trace gathers in one coherent zone, CRS stack can focus more energy on the vicinity of the reflector, and therefore can obtain a high signal-to-noise ratio zero offset section by stacking events with the same phase.

共反射面叠加利用了邻近多个共反射点道集的相似性，提高了资料的覆盖次数，从而压制了随机噪声，增强反射波同相轴的连续性，大幅提高了地震资料的信噪比。

Results the overall injury prevalence was 4.58 ‰,and in details,the prevalence gender ratio(boys vs. girls) was 3.48. further analysis showed that the injury prevalence among adolescents was associated with the school types. the campus was the main place of injury occurrence (82.8%). incaution was the leading cause for adolescent injuries accounting for 85.5%. the leading four types of injuries were collision (56.9%),falls (28.8%),knife-cutting or sharp weapon hurt (4.7%) and traffic accidents (1.8%). the most common types of injury were fraction (41.6%) and trauma (36.4%).

结果 学生伤害的平均年发生率为4.58‰，男、女生伤害发生率比值为3.48；伤害发生率与校别有较密切的关系；学校是学生伤害发生的最主要场所，占82.8%；不慎是造成学生伤害发生的最主要原因，占伤害发生原因的85.5%；排在前4位的伤害类型依次是碰撞(56.9%)、跌落(28.8%)、切割穿刺(4.7%)、交通事故(1.8%)；伤害性质主要以骨折和外伤为主，分别占伤害数的41.6%和36.4%。

Signals, equal to ten times the common logarithm of the ratio of the two levels.

强度'。''方面的相对差别的单位，相当于两个水平的比率的常用对数的十倍

A unit used to express relative difference in power or intensity, usually between two acoustic or electric signals, equal to ten times the common logarithm of the ratio of the two levels.

分贝通常表示两个声音信号或电力信号在功率或强度方面的相对差别的单位，相当于两个水平的比率的常用对数的十倍

It is customary to plot the amplitude ratio in decibels and the phase angle in degree against the common logarithm of the input frequency.

在绘图时通常幅值用分贝表示，相角用度表示，输入信号的频率按常用对数取值。

Lugalbanda was a god and shepherd king of Uruk where he was worshipped for over a thousand years.

Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。

I am coming just now,' and went on perfuming himself with Hunut, then he came and sat.

我来只是现在，'歼灭战perfuming自己与胡努特，那麼，他来到和SAT 。