查询词典 stepwise

The paper derives detailly the viscoplastic strain velocities of joint, intact rock, as well as multilaminate rock mass corresponding to different stress states, and presents a viscous elastoplastic F·E·M·with consideration of the stepwise excavation sequence and different supporting time of lining in underground works with large cross-section.

分别推导了在不同应力状态下节理面、完整岩石和多组节理岩体粘塑性应变速率的计算公式。提出了节理岩体大断面洞室考虑分步开挖和不同支护时间的粘弹塑性有限元数值方法。

Descriptive statistics, Pearson correlation and Stepwise multiple regression were employed to address the research questions.

本研究采用描述统计、皮尔逊积差相关分析以及逐步多元回归来探讨1学生英语教室结构认知的现况2学生英语成就目标动机的现况3英语教室结构认知与成就目标动机的相关性，以及4四个教室结构对精进目标的预测性。

Taken Qinshui Basin as an example a predictive model of gas content is established by multiple stepwise regression analysis, using Langmuir volume and gas saturation as its parameters. The result of multiple correlation coefficient testing, F-testing and t-testing indicates that the model meets the hypothesis testing of linearity and its matching effect is preferable.

以沁水盆地为例，运用多元逐步回归分析方法，建立了以Langmuir体积和含气饱和度为参数的含气量预测模型；复相关系数、F检验、t检验结果表明，该模型满足线性与方差齐性的假设，拟合效果较好。

There was no factors which is constantly related to arterial IMT and function in the stepwise multiple regression analysis.

多元逐步回归分析在所观察的参数中未发现和血管结构与功能有固定关系的因素。

The collected data were analyzed by t-test and multiple stepwise regression analysis.

并将所搜集的资料以独立样本t考验和多元逐步回归分析来探讨。

In this paper, firstly we use stepwise discriminant analysis method in the multivariate statistics analysis to select the index from all of the enterprise rating index and establish reasonable enterprise credit rating system .

我国国有独资商业银行在信用评级方法上已经基本与国际接轨，但在评级实践中却暴露出一些问题，主要是评级指标和分值标准由主观确定缺乏科学依据。

The relationships of the infracallosal segment of the PerA to the CMA and the A2 segment of the PerA to the frontopolar artery were examined. The distance between the nasion and the site at which a parallel line directed along the long axis of the infracallosal PerA just proximal to the origin of the CMA artery crosses the forehead (which we have named the PC point) was also measured. In addition, the surgical approaches to DACAA were examined in stepwise dissections.

在10具血管经彩色乳胶灌注的尸头上检查大脑前动脉远段区域的显微解剖，了解胼周动脉胼下段与胼缘动脉及胼周动脉A2段与额极动脉的关系，同时测量鼻根部与胼缘动脉起点处近端胼周动脉长轴延长线与额部交点间的距离，并模拟外科入路至大脑前动脉远段动脉瘤。

In addition, the changes of molecular geometry, atomic natural charge and IR spectra of the reaction system during the crucial step of O to attack H showed that the rupture of C—H bond and the formation of O—H bond were concerted stepwise. Obvious changes of atomic natural charge happened to atoms C(1), H(11), O(28), O(29) and N(27). The bond lengths and bond angles related to these atoms were also varied greatly.

NO2中O进攻1-H决速反应过程中，分子几何、原子自然电荷及IR光谱变化表明， C—H键的断裂和N—H键的形成是一个协同过程；参与新键形成和旧键断裂原子C(1)， H(11)， O(28)， O(29)和N(27)的原子自然电荷及与其相关的键长、键角有明显的变化。

Patients completeda questionnaire that included socioeconomic variables SF -36 SDS for Depression. The descriptive non- parametric statistics u test t test x2 test and stepwise multiple regression analysis were adopted.

统计方法使用描述性方法、非参数检验方法、u检验、t检验、x检验及多元逐步回归方法等分析脑卒中患者的生活质量状况及其影响因素。

In order to study the factors related to Enterobius infection among per-schoolchildren, a structural questionnaire with multi-stages and a random sampling was designed to interview parents of 702 pre-schoolchildren. The questionnaire included personal information of the children: their educational background and parents' occupation; the status of their housing; their handwashing habits, and their frequency and habits of bathing, etc. In addition, the children's pinworm infections were examined using two-consecutive-day adhesive cellophance paper perianal swabs. Variables causing the pinworm infection among infected and noninfected children were analyzed by x2-test and multi-variable tests including discriminant analysis and stepwise multiple regression.

为了解学龄前儿童蛲虫感染之因素，以结构型问卷多步骤随机抽样访视702名学龄前儿童的家长，问卷的内容包括：儿童个人资料、儿童父母亲教育程度、职业、住屋情形、卧室分配情形、手部卫生习惯、洗澡习惯等，并以连续两天玻璃胶纸肛围擦拭法〈two-consecutive-day adhesive cellophane paper perianal swabs〉检查儿童的蛲虫感染情形，儿童蛲虫感染与各单变项的相关，以卡方检定〈x2-test〉分析，而多变项的分析则以判定分析〈discriminant analysis〉及逐步复回归〈stepwise multiple regression〉进行分析。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。