压点

The main jobs of the paper are as follows, Multi-scale decomposition and reconstruction of wavelet transform is utilized to filter the noise of negative-pressure-wave, which is brought by leakage. With the capacity to detect the signal singularity quickly and accurately, wavelet transform was used to catch the break point of pressure signal. Accordingly, the work improved the location accuracy.

主要研究工作有：利用小波变换的多分辨率分解和重构技术，对采集到的管道泄漏产生的负压波信号进行消噪处理，并对几个影响消噪质量的关键因素及其选取方法进行了分析；再利用小波变换技术对信号奇异点的快速、准确的识别能力，对经消噪后的负压波信号进行奇异点捕捉，从而实现更精确的单条燃气管道泄漏定位。

It basically operates the main point as follows: The left hand holds the ticket, the palm is downward, the thumb is pinned in the middle of the left end of the front of the bank note, the forefinger and middle finger are on the back of the bank note, pinch the bank note together with thumb; Left hand the third finger naturally curly, pinch, get up bank note little finger stretch to bank note front push down bank note below the Left deviation; The middle finger of left hand is exerted oneself slightly, the bank note of tight card together with the third finger, little finger; The left hand forefinger is stretched, the thumb is moved upwards, pin the side of the bank note, keep the bank note into the tile shape; Left hand wipe from tabletop bank note, bank note turn, thumb strength wiped from tabletop to borrow prop up bank note covering of a fan and oblique to oneself of WeiKai Cheng; Three fingers of right hand dip in water, rotate and move the lower right corner of the bank note downwards sharp with the thumb, the forefinger cooperates with the thumb to rotate and move on the back of the bank note; Play in one's arms, count while ordering with right hand the third finger bank note got up to rotate; Pay attention to the posture at the some paper money, the health is straight and upright, the eyes It must keep eyeball and bank note from,put dual tactics elbow at tabletop.

其基本操作要领如下：左手持票，手心向下，拇指按住钞票正面的左端中央，食指和中指在钞票背面，与拇指一起捏住钞票；左手无名指自然卷曲，捏起钞票后小拇指伸向钞票正面压住钞票左下方；左手中指稍用力，与无名指、小拇指一起紧卡钞票；左手食指伸直，拇指向上移动，按住钞票的侧面，将钞票压成瓦形；左手将钞票从桌面上擦过，钞票翻转，拇指借从桌面上擦过的力量将钞票撑成微开的扇面并斜对自己面前；右手三个指头沾水，用拇指尖向下捻动钞票右下角，食指在钞票背面配合拇指捻动；用右手无名指将捻起的钞票往怀里弹，边点边记数；点钞时注意姿式，身体挺直，眼睛和钞票保持一定距离，两手肘部放在桌面上。

Therefore it is necessary to research the mechanism of greensand used for high compacted molding methods thoroughly.This subject is one section of the National Natural Science Foundation subject ""Ivestigation on Predicting Method and Mechanism of Springback for High Compacted Sand Molds"", followed of the other completed one named ""Research on Microdeformation of Molding Sand"". A serious of experiments has been done on the reequipped three axial machine under certain technological conditions, and the mechanics, material science, rheologic science. It is systematically studied that the influences on the springback of sand mold were caused by the main influence factors: pressure, compacted rate and the content of soil. Through the analyzed experiments' data, the experienced stress-strain relationship concerning the main influence factors were obtained;under different technical parameter, the springback and spingback's potential energy are compared, the differences and indifferences between them are found out, and the springback's mechanism is discussed;according to the tests' data of YangGuoping coming from Tinghua University, experienced formula of molding sand's springback displacement is induced, the displacement and springback are compared, the margin of error's reasons are analyzed, and they are tested and verified mutually.

本课题为国家自然科学基金项目"高紧实度砂型预测方法及回弹机理的探讨"的一部分，是已结题的国家自然科学基金项目"铸造型砂微变形的研究"的后继，运用力学、材料学及流变学理论，利用改装的三轴仪，在一定的工艺条件下，作了大量系列实验，系统的研究了压实比压、紧实率和膨润土含量对砂型回弹的影响；对实验数据进行了分析和处理，得出了型砂关于压实比压、紧实率和膨润土含量的本构关系的经验公式；把各工艺参数下的型砂产生的回弹量与回弹势能进行比较，找出两者存在的异同点，并对回弹机理进行了探讨；通过清华大学杨国平的实验数据，推导出型砂回弹位移场的经验公式，并与实验测出的回弹量进行比较，分析误差造成的原因，并互相进行了验证。

Though several leak detecting methods are available, they are not ideal inapplication scope, including responses speed and accuracy of leak localization. In thisdissertation, according to the conditions of pipeline transportation in our country,research is carried out on crude oil transported pipelines leak detection and locationtheory and the study on its supervisory system is given.

本文结合我国管道输送的实际情况，针对原油管道泄漏检测技术及其运行监测系统进行了深入的研究，主要进行了以下几个方面的工作：将小波变换技术引入到负压波特征拐点的捕捉，利用连续小波变换时间-尺度特性检测信号的奇异点，能够有效的检测出强噪声背景下的信号边沿，此外，还提出了负压波法泄漏检测中误报警消除的多种方法。

In chapter one,the backgrounds and current situation of operator theory in Banach space are introduced and the preliminaries of Banach space are given.In chapter two,we study the existence and uniqueness of fixed point for decreasing strict-set-contraction operator in product space.Under the weak continuous condition,we obtain the existence and uniqueness of fixed point for decreasing operator and we give an application of these results; In chapter three,we get several positive fixed point theorems of decreasing operator and the existence and uniqueness theorems of positive fixed point for operator C=A+B,C=D-A in real Banach space where the order is decided by a normal cone; In chapter four,we obtained some existence and uniqueness theorems of fixed point for some mixed monotone operators in semi-ordered Banach space.

在第一章中，主要介绍了半序Banach空间非线性算子的研究历史背景、现状以及半序Banach空间中的预备知识；在第二章中，我们利用半序方法研究了Banach乘积空间中严格集压缩减算子不动点存在唯一性问题，在弱连续的条件下，得到了不动点的存在唯一性和迭代收敛性，同时，给出了它们的一些应用；在第三章中，我们建立了拟弱连续减算子的正不动点定理，并证明了算子C=A+B，C=D-A的正不动点存在唯一性定理；在第四章中，我们得到了半序Banach空间中混合单调算子的不动点存在性及唯一性定理。

This paper sets up the fixed point theorems for cone stretching or compression and more extensive fixed point theorems for cone stretching or compression in their normal forms on the condensing mapping.

本文建立凝聚映象的锥拉、压不动点定理和更为广泛的范数形式凝聚映象的锥拉、压不动点定理以及对非锥映象的表现形式，然后利用所得的结果来研究凝聚算子的固有值的全局特征和算子方程的非零解并用到YpbIcoH算子上。

And softening point, viscosity and solidifying point of the bond decide the optimal temperature according to the mechanism of warm compaction.

通过对温压机理的分析，发现最佳温压温度由粘结剂的软化点、粘度和固化点三个因素共同决定。

The research results of the above have preferably solved the hot point problems discussed and studied in the process of the calculation of water diversion system unsteady flow of air cushion surge chamber, offer theoretical basis to accuracy calculation and reasonable design of air cushion surge chamber, and are helpful to make air cushion surge chamber more popularized in our country.

上述几方面内容的创新点就在于，实现了对气垫式调压室过渡过程的全面系统的研究，较好地解决了设有气垫式调压室的引水系统非恒定流计算过程中一直处于讨论、研究阶段的热点问题，为准确计算、合理设计气垫式调压室提供了理论依据，对加速推广气垫式调压室在我国的应用有很大帮助。

The mechanical characteristics of the foam filled 3-D spacer fabric composites under flatwise compressive , shear and three point s flexural loads were compared with 3-D spacer fabric composites and foamsandwich composites , and the effect s of pile height and foam density on the mechanical properties were investigated.

将三维间隔连体织物泡沫夹层结构平压、剪切和三点弯曲载荷作用下的力学特性与三维间隔连体织物复合材料、传统泡沫夹层结构复合材料进行了对比分析，在此基础上，考察了芯柱高度、泡沫密度对复合材料平压、剪切、三点弯曲性能的影响。

Bobbin used by wire joint should be crimping tools of 3 point crimping type.

压线帽使用的压线轴必须是专用配套的&三点抱压式&压接钳。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。