查询词典 existence

Under the conditions of compatibility or sub-compatibility between a set-valued mapping and a single-valued mapping, the existence of cotnnlon fixed points for two set-valued mapping and a single-valued mapping in complete metric space is discussed.

在集值映象与单值映象相容或次相容的条件下，讨论了度量空间中两个集值映象和一个单位映象的公共不动点的存在性，改进和推广了一些相应结果。

2By constructing a completely continuous operator in a functional space and employing the cone compression and expansion fixed point theorems, we obtain some sufficient conditions which guarantee the existence of positive periodic solutions for Eq.

通过在一个函数空间构造一个全连续算子，再利用锥压缩锥拉伸不动点定理，得到了一些保证方程(1)，(2)至少存在一个周期正解的充分条件，所得结论改进了文[1]和[6]中的结果。

Because of the complexness of the co-existence of unsteady three dimensional environmental flow and the jet flow, thorough study of the problem is difficult.

本文试图通过数学模型的方法对这一情况下的污水排放射流问题进行研究，为污水排海工程提供可行的参考模型。

A sincere compliment is one of the most effective teaching and motivational methods in existence.

真诚的赞美是最有效的教学方法，也是生活的动力之源。

Such observation resulted from the special shape of the conical column, in which the composition of forces near the conical column wall was different from that near the cylindrical column wall owing to the existence of the inclined plane.

这是由台锥形柱特殊的结构造成的。由于台锥形柱斜面的存在使流体在管壁区的受力情况不同于圆柱的管壁区

Such observation resulted from the special shape of the conical column, in which the composition of forces near the conical column wall was different from that near the cylindrical column wall owing to the existence of the incline d plane.

这是由台锥形柱特殊的结构造成的。由于台锥形柱斜面的存在使流体在管壁区的受力情况不同于圆柱的管壁区

For a given compound rule, if the upper bounds of both confidence and support minus their corresponding lower bounds are less than a given constant, the measurements of the rule are definite; if the the lower bounds of both confidence and support are greater than their corresponding thresholds, the existence of the rule is certain.

对于一个复合型分类关联规则，如果规则的支持度和置信度的下界都分别超过支持度阈值和置信度阈值，则称该规则的存在性是确定的；如果规则的支持度和置信度各自的上界与下界之差小于一个给定的常量，则认为规则的度量参数是确定的。

I've always had an overwhelming compunction to confess, to reveal the most revolting details of my existence to others.

我总是有着需要为之忏悔的压倒性的良心的谴责，来向别人暴露我生活的最令人厌恶的细节。

An identity-conferring commitment, according to Williams, is 'the condition of my existence, in the sense that unless I am propelled forward by the conatus of desire, project and interest, it is unclear why I should go on at all.

根据Williams的看法，一个身份赋予性承诺是：我存在的条件，表示除非我被渴求、项目和兴趣的。。

Secondly in§3.2 ,firstly we prove a new fixed point theorem on Banach space,and study the Sturm-Liourille boundary value problem with the theorem and some properities of concave function, then the existence of three positive solutions is gotten.

第二节，先证明一个新的锥上不动点定理，再利用此定理及凹函数的性质来研究边值问题，得到了三个正解的存在性。

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。