查询词典 homogeneity relation

This article first discusses the significance of homogeneity of variance, then studies the general method of transformation for homogeneity of variance on the relation between the data mean and the variance when population distribution is known ,and it uses the Mathematica software to analyse the variety rules between the parameter and the variance in the corresponding transformation.

从方差非齐性数据处理中的变换的必要性入手，根据数据均值与方差之间的关系研究了总体分布已知时的方差齐性变换的一般方法，并利用Mathematica软件分析相应变换中参数与方差之间的图形规律，最后介绍了总体分布未知时的BoxCox变换的一般原理。

Statistics show that the vulnerable groups' networks are small in size, high in density, obvious in homogeneity, and few in relation varieties. Such a situation results in that the vulnerable groups own little resource, have weak social bearing force, meet with difficulties for upward flow and develop slowly.

统计资料显示，弱势群体的网络规模小，密度高、同质性强，关系种类少，这种状况致使弱势群体拥有的资源校少，社会承受力脆弱，向上流动困难，发展受约束。

Further proceed intersection analysis and focus on children studies. The result indicates that experimental diagnosis based on RT-PCR, is homogeneity and the relation between norovirus and the symptoms of acute gastroenteritis is significant (OR, 2.7;95%CI, 2.2-3.2). Equally, the surveillance studies (OR, 2.5;95%CI, 2.1-3.0), outbreak studies(OR,4.7; 95%CI, 3.2-7.1), hospital-based studies(OR, 2.8; 95%CI, 2.0-4.1), and community-based studies(OR, 2.0; 95%CI, 1.2-3.3) have the same result as the former.

进一步将研究对象为孩童的文献进行交叉分层分析，结果发现，以孩童为研究对象的文献中，实验室诊断以基因体RNA为侦测标的的研究，其效果量具有同质性，且诺罗病毒与急性肠胃炎症状的相关性在此分层是显著的（OR=2.7，95%CI： 2.2-3.2），资料来源为监测性研究（OR=2.5，95%CI： 2.1-3.0）或疫情爆发研究（OR=4.7，95%CI： 3.2-7.1）以及研究场所为医院（OR=2.8，95%CI： 2.0-4.1）及社区（OR=2.0，95%CI： 1.2-3.3）的研究亦有相同结果。

The main factors determined IMS resolutions are the initial ion gate pulse width and diffusion in the drift tube. We conclude the homogeneity of the electric field in the drift tube through analyzing the relation between resolution and ion gate pulse width and drift tube temperature. It is still concluded that inhomogeneity of the electric field has much influence on IMS resolution, which is generally ignored previously.

IMS分辨率最主要的决定因素是离子门脉冲的开门时间和离子在迁移管内的扩散效应，根据在不同离子门开门时间和不同温度下所作的分辨率关系曲线，我们推断出了迁移管内电场的均匀情况，并且得出在一般的IMS工作条件下，迁移管内电场的不均匀对分辨率也有很大的影响，这在以前人们讨论IMS的分辨率时通常被忽略，并没有引起足够的重视。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。