Alkaline zinc - manganese battery is widely used all over the world it has good performance of storage ， low cost ， stable discharge and convenience of carrying the sealing of the battery is a crucial factor to the performance of the battery due to the disadvantages of present sealants ， leakage of electrolyte often happens what ’ s more ， the sealing capability affects the performance of the battery the way to raise the sealing capability is to search for a good additive ， which can improve the sealing capability through adding according to chemical principles ， this article picks out ptfe and nylon66 as additive adding ptfe or nylon66 into the pitch can improve the sealing capability of the pitch at the same time ， the temperature ， the time ， the amount of addictive ， the way to drop temperature and the time of churning all should be considered by testing the constitutions ， softening point ， moving degree and length of needle of various pitch samples ， we can compare the properties of different sealants can be studied by using of x - ray , the constitutions of the pitch can be indicated which can help us to explain these changes this article includes ： testing the constitutions ， soften point ， moving viscosity and needle penetration of various pitches ； raising the sealing capability by adding ptfe nylon66 into the pitches ； testing the constitutions ， soften point ， moving viscosity and needle penetration of raised samples ； analyzing and discussing the basic principles of this method it is showed that soften point ， moving viscosity and needle penetration of pitches are increased by adding ptfe nylon66 and the discharge time ， initial voltage ， capacity of battery with pitch raised by nylon66 are good and get to the requirement of gb t7 1 1 2 in a11 the method proposed in this article is available in practical industry use 通过测定改进沥青的软化点、运动粘度和针入度等指标参数来比较不同的添加剂及不同的添加条件对沥青封口性能的影响。本论文的主要研究结果为：系统测试了多种沥青样品的组成、软化点、运动粘度、针入度；对市售沥青分别添加聚四氟乙烯乳液、有机硅树脂和尼龙66进行改进，制备了改进产品；对改进沥青的组成、软化点、运动粘度、针入度进行了测试和比较；使用改进沥青组装成电池并对电池进行恒电流放电测试、短路电流测试和电池漏气、漏液性能的测试；对沥青改进的原理进行了分析和讨论。实验结果表明：在沥青中添加尼龙66和聚四氟乙烯乳液对沥青的封口性能有明显的提高；通过对工艺条件的不断改进，目前的工艺条件已完全可以用于实际生产操作；以添加尼龙66改进的沥青为封口剂组装成的电池完全满足碱锰电池生产的需要，且电池电容量、短路电流等指标均达到gb t7112标准要求；本文提出的改进方案，通过验证是一种效果好、实用性强的方法。
One of the common characters between traditional algorithms based on dct image coding is that regardless of the content of the image , they use a fixed size block to process , for example , jpeg , mpeg - 1 / 2 , h . 263 use constant 8 * 8 block mode . the main work of this article is to propose a sequence images compression algorithm that is based on adaptive block dividing and object to the disadvantages of the one based on fixed - size block dividing . the proposed algorithm is an image compression method , which can auto - adjust dct block size ( 8 * 8 or 4 * 4 ) according to the difference of corresponding blocks between two frames of the sequential image and doesn ’ t process any unnecessary data blocks in order to enhance coding efficiency 传统的基于dct的图像编码算法的一个共同特点就是:不管图像的具体内容,采用固定的块尺寸进行统一的处理,例如jpeg , mpeg - 1 / 2 , h . 263均采用固定的8 8分块方式,本文的重点工作是针对这些采用固定的块尺寸进行统一处理的算法的一些缺点,提出了一种基于自适应分块的序列图像压缩算法,该算法是一种根据序列图像两帧间对应块的差别自动调整dct变换尺寸( 8 8或4 4 ) ,对不必要的数据块不进行处理,以提高编码效率的序列图像压缩编码方法,具有较高的编码效率和较好的压缩效果,与传统的采用8 8固定分块方式的压缩编码算法相比,性能有较大幅度的提高,在文中,作者对两者的压缩编码性能进行了分析比较。
Secondly , introducing the image analyzing technology with reference to the disadvantages of the traditional ferr - graph analysis technology , and with the combination of characteristic parameter optimizing filtration so as to raise a description method of debris micro - morphologic character . thirdly , with the application of mode recognition method , completing the process of debris auto - recognition based on the collected information of the debris configuration characteristics ; and conducting the diagnosis on the aero - engine wear faults according to the theory of particle tribology . fourthly , introducing information fusion technology to solve the problem that a single method can not collect enough fault premonitory information to conduct the wear fault diagnosis , hence to conduct the research and exploration in the field of comprehensive diagnosis on the aero - engine ' s multi - fault premonitory information 本文的研究工作主要包括以下五个部分：首先，介绍航空发动机常见的磨损故障类型，研究磨损故障的失效机理，分析磨粒的产生机理、分类以及形态特征：其次，针对传统铁谱分析技术的缺点，引入图像分析技术，再结合特征参数优化筛选，形成基于图像的磨粒显微形态学特征描述方法：然后，基于提取到的磨粒形态特征信息，应用模式识别方法完成磨粒自动识别，并根据颗粒摩擦学的基本原理进行航空发动机磨损故障的诊断与定位：再后，鉴于单一方法不能提取足够的故障征兆信息进行磨损故障诊断，本文引入信息融合技术，开展航空发动机多故障征兆信息综合诊断方法的研究与探索；最后，基于航空发动机滑油光谱分析与铁谱分析数据，应用时序模型、灰色模型以及组合模型进行磨损故障的预测方法研究。
If i tell a malicious lie , in order to affect any man ' s fortune or character , i may indeed injure him for some time ; but i shall be sure to be the greatest sufferer myself at last ; for as soon as ever i am detected ( and detected i most certainly shall be ) , i am blasted for the infamous attempt ; and whatever is said afterward , to the disadvantage of that person , however true , passes for calumny 假如我恶意散布谎言，以此对某人的命运或品质造成不利影响，也许确实会一时伤害他；但最终最受伤害的必然是我，因一旦我被发现（完全肯定有那一天的） ，我就会为那种可耻的行为受到诅咒，而无论以后说什么那人的缺点，再真实都会被当作是诽谤。
