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As far as animals'NISP is concerned, domestic animals occupy a very large proportion, while the proportion of wild animals doesn't exceed 25% all the time. Based on such statistics, it can be inferred that the manner by which ancient settlers of Erlitou site acquired their meal resources can be defined as"exploiting type".In the dietary contribution of this site four species, which are Sus scrofa domesticus, Ovis sp., Capra sp., Bos sp. and Cervus nippon, formed the most important and stable meal source of ancient settlers of Erlitou site. Meanwhile, Sus scrofa domesticus played the most important role among the four species.

本文可以确定狗、猪、山羊、绵羊和黄牛这五种动物为二里头遗址先民们饲养的家畜，它们的可鉴定标本数在全部动物可鉴定标本总数中占有非常高的比例，野生动物的比例始终没有超过25%，据此笔者认为二里头遗址先民们获取肉食资源的方式应属于&开发型&；从肉食结构来看，猪、牛、羊、梅花鹿这四种动物构成了当时二里头人最为重要而稳定的肉食来源，在这四种动物中，又以猪最为重要。

Get the neonate Sprague-Dawley rats medulla spinalis, through the conventional primary cell culture procedure, we use the method of difference adherence time and get the motor neurons of anterior spinal cord. When the neuron is in maturity, we make the mechanical injury model in vitro. All the models were divided into four groups: group A is control group; group B is 100μM ATP group; group C is 100μM ATP+20μg/ml suramin group and group D is 100μM ATP+10μM ouabain+10μg/ml Thapsigargin group. Culture the four groups neurons, after one day, we count the motor neuron, observe the survival and activity of neurons through MTT shade selection experiment, use flow cytometry to analyze the percentage of apoptosis of motor neurons of anterior spinal cord and detect the expression of protein p-GSK-3β(ser9) through Western-Blot technology.

方法取新生大鼠脊髓，通过常规的原代细胞培养程序，采用差速贴壁法分离出大鼠脊髓前角运动神经元，培养成熟后制作神经元机械损伤体外模型，分为A组：对照组、B组：100μMATP组、C组：100gMATP+20μg/ml Suramin组和D组：100μM ATP+IOμM Ouabain+10μg/ml Thapsigargin组，对各组机械损伤的运动神经元进行培养，1天后分别进行运动神经元计数、MTT比色实验观察运动神经元的存活及活性、流式细胞仪分析机械损伤的脊髓前角运动神经元凋亡百分率和Werstern Blot技术检测p-GSK-3β(ser9)的表达。

To analyze the experimental results, the four operating conditions that influence mean particle size and size distribution, filtration time and the rate of hydrolysis of titanyl sulfate solutions are evaluated, four fitting models between responses and its influence factors are obtained. Optimum operating conditions are predicted. An experiment for validation of predicted conditions was carried out, and confirms the estimations are correct.

利用响应面试验设计软件来辅助设计，根据实际的输入与响应的结果，研究了搅拌速率、加料速率、加热速率和底水量对水解产物的粒度及粒度分布、过滤时间和硫酸氧钛的水解率的影响，推导了四个因素对四个响应的数学模型，分析其试验误差，最后得到优化试验的预测结果，用于指导实际的生产过程。

More than four months, four and a half months to do at the time...

四个多月，四个半月的时候才好点。。。

Volume 1 introduces the history of accordion , Volume 2 is about the preliminary spread of accordion in China . I dug into great amount of concerning historical data of four aspects, they are the early accordion textbooks, the accordion activities happened in Shanghai, Haerbin and Yanan, which veritably resurges the development of accordion art in China before 1949. Volume 3 reveals the development of Chinese accordion art from after 1949, I focused on five aspects, namely the production, education, performance, theoretical study and communication between China and foreign counties, in time order. This part comprehensively shows the plenty fruits of accordion art in around 50 years after the foundation of China. Volume 4 mainly concerns the development of Chinese accordion music composing. It reviews the history in four periods. Meanwhile, this part also analyses in detail the nationalization pursuit and the utilization of performance skills in composing.

第一章是对&手风琴历史源流&的介绍；第二章是&中国最初的手风琴艺术传播&，本人挖掘出大量的相关史料，从&早期的中国手风琴教科书、上海、哈尔滨和延安的手风琴活动&四个方面进行了研究，真实地再现了1949年以前的中国手风琴艺术发展；第三章是&新中国成立以来的手风琴艺术发展&，分别从&乐器制造、手风琴教育、表演、理论研究与中外交流&五个方面按时间顺序进行了论述，全面反映了手风琴艺术在新中国成立后50余年所取得的丰硕成果；第四章是&中国手风琴音乐创作的发展&，论文将手风琴音乐创作分为四个时期进行了历史的回顾，并对创作中的民族化追求以及手风琴演奏技巧在创作中的运用作了具体分析。

And sometimes, calculated "splurges" save both time and money: A taxi ride split by four people can cost less than four bus tickets.

而且有时候计算一下&花费&可以既省钱又省时，四个人分担出租车钱比单买公交车票便宜。

The thesis designs that PLC controls four servo electric motors using Aimosheng EC20H , the rocker arm realizing beam drill goes up and down , the rocker arm rotates , the main spindle box slides , the chief axis moves forward to give axial four action , PLCs the motion controlling one frequency conversion electric motor at the same time realizing the machine tool host moving the revolution being a chief axis.

本论文设计使用艾默生EC20H PLC控制四台伺服电机，实现摇臂钻床的摇臂升降、摇臂旋转、主轴箱滑动、主轴进给四个轴向的动作，PLC同时控制一台变频电机实现机床的主运动即主轴的旋转运动。

The Company was founded in 2000, specializing in PVC card, paper card, the research, development, production and integration of large-scale manufacturer, our company has first-class equipment, high-quality staff, strict confidentiality of all-closed-type production flow can be on the production of five million, has operations in the country's telecommunications, Railcom, China Netcom, China Unicom and large shopping malls, hospitals, Game Networks, Inc., etc.; and in 2002 the successful introduction of large Heidelberg press equipment, thus becoming Dongguan rare at the same time have the printing and fabrication equipment company specializing in paper packaging design, production and processing business, is now the owner of Heidelberg, Germany color press off, the four opened one of the Units, fully automatic four-color trademarks machine, Taiwan 5-color presses trademarks, trademarks CNC automatic presses (which can be carried out and the second double-sided printing), UV dryer, Japan imported folding machines, automatic form machine, printing of dual-use machine, beer machine, paper mounting machine, nail box machine, fully automatic machine, such as business cardsòúand various ancillary equipment.

本公司是一家成立于2000年，专业从事PVC卡、纸卡的研究、开发、生产与一体的大型的生产厂家，我们公司拥有一流的设备，高素质的工作人员，严格的全封闭保密式生产流程，可月生产500万张，业务遍及全国的电信、铁通、网通、联通及个大型商场、医院、游戏网络公司等；并在2002年成功引进大型海德堡印刷机设备，从而成为东莞少有的同时拥有印刷和制卡设备的公司，专门从事纸类包装设计、生产和加工等业务，现时拥有德国海德堡彩色印刷机对开、四开各一台、全自动四色商标机、台湾产5色商标印刷机、全自动数控商标印刷机（可进行双面及第二次印刷）、UV干燥机、日本进口折页机、全自动表格机、烫印两用机、啤机、裱纸机、钉箱机、全自动打码机及名片机等各种配套机械设备。

In order to study the intake air flow characteristics in four-valve diesel engines, in this dissertation hot-wire anemometer and PIV twodimension instantaneous measuring technique are used. Extensive experimental study on two intake valve exit flow fields and longitudinal section flow field in cylinder are performed for different type of diesel engines. Great researching progress have been made on the interaction between two intake ports, and the formation process of in-cylinder swirl and flow field structure of cross and longitudinal section for four valve diesel engines. These results are presented in China for the first time and without such kind of research work reported abroad as detailed and deepgoing as this dissertation. The author designs and makes a set of hot wire measuring velocity device to measure the velocity distribution around the intake valve annulus and the cross section flow field in cylinder.

为了研究四气门柴油机进气过程中气体流动的变化规律，本文利用热线测速和PIV二维瞬态测速技术，对四气门柴油机两进气门出口全圆周流速场和缸内横、纵剖面的气体流动流场进行了大量的试验研究，在四气门柴油机两进气道之间相互影响的变化规律，缸内涡流的形成过程及缸内横、纵剖面流场结构等方面取得了重大的研究进展，这一研究工作在国内尚属首次，在国外也未见有如此全面、深入的研究报道。

MWM engine makes the conversion among two-stroke mode, four-stroke mode and six-stroke mode of one engine come true in theory, filles in the blank with 1/3 which is the ratio of total strokes to working strokes in single working cycle of engine, possessing the continuous variable compression ratio of a certain range at the same time, combines the advantages of two-stroke engine and four-stroke engine, expandes the working range of engine greatly.

MWM发动机在理论上实现了一台发动机在二冲程、四冲程与六冲程工作模式之间的相互转换，填补了发动机单工作循环作功行程数与总行程数比值中1/3的空白，同时具备一定范围连续可变的压缩比，整合了二冲程与四冲程发动机的优点，拓展了发动机的工作范围。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。