车

Push-pull air-cushion platform is the first non-continuously moving air-cushion vehicle that applied worming bionic principle.

推拉式气垫运载平台是第一台应用蠕动式仿生原理设计的非连续运动型气垫车，这不同于以往设计的气垫车。

Considering the characteristics of the push-pull air-cushion vehicle, this paper gives the definition of pace steering angle, that is taking the actual steering angle of the moving platform in one pace circle as a pace steering angle.

针对上述问题，结合推拉式气垫车的运动特点，文章给出了单步转向角这样一个定义，即以车辆的一个步进工作循环下运动平台的实际转角作为一个单步转向角，气垫车的实际转向角通过各单步转向角累加而成。

The walking mechanism of push-pull air-cushion vehicle includes two parts: push-pull mechanism and anchoring mechanism, both take hydraulic cylinders as driving components. So this walking mechanism has advantages of lighter weight and higher driving efficiency, it can work on many areas.

推拉式气垫车的行走机构包括推拉机构和抓地锚定机构两部分，它们都是以液压油缸作为驱动元件，通过液压传动实现伸缩动作的，这样既省却了轮式、履带式车辆笨重、复杂的行走机构，又大大提高了气垫车的驱动效率，能够适应各种复杂地表条件。

So in this paper based on the characteristics and the optimum state theory of the vehicle, some kinds of control schemes are compared and discussed, and the fuzzy PID control scheme is adopted at last. The relation between air-cushion pressure and fan rotational speed on the optimum driving state is studied. The cushion pressure is used as controlled variable and the fan revolution is used as regulated variable. And transducer and fan motor are actuators.Based on the structure and operating properties of half-tracked air-cushion vehicle, the control system scheme and structure are presented. A control scheme using the self-tuning PID fuzzy logical controller is adopted. Fuzzy rules are set up and some researches have been done for fuzzy tuning method. At the same time the real-time measurement scheme by computer control is proposed, and electric circuits are designed. In the control system of half-tracked air-cushion vehicle cushion pressure P〓 is used as controlled variable and the fan speed n〓 as regulated variable.

因此本文以半履带式气垫车的特性和最佳工作状态理论为指导，通过对各种控制方法的比较与探讨，提出采用模糊PID控制方案，并且研究了在最佳工作状态下垫压及风机转速的关系，提出气垫压力作为控制参数，变频器和风机电机为执行机构，风机转速为调节量；主要进行了自整定模糊PID控制器的设计，研究了自整定PID模糊控制器的实现方法，编制了模糊控制规则，制定了模糊控制参数查询表，并分析了影响自整定模糊控制器相关的影响因素，确定了模糊控制表；为了实现半履带式气垫车的自动控制，还提出了计算机模糊控制系统的原理与结构，设计了相应的测量电路与控制软件。

Airbag in the car in front of (positive co-pilot), and lateral and cars in three directions.

安全气囊分布在车内前方，侧方和车外三个方向。

In the beginning I didn't perceive it because there were so many people to make the bus airproof.

我当时没有发现，车里挤的密不透风，直到在某站公交停车时，才听见车门口有人大喊"干什么呢！"。

The water contents in 1m soil layer of eight vegetation types in Yuanmou dry and hot valley in rainy season(August 2 to September 2) were measured and analyzed.These eight vegetation types are Pinus caribaea plantation,Pinus caribaea+Dodonaea viscosa plantation,Albizzia kalkora natural regeneration forest;Dodonaea viscosa+Tephrosia candida plantation,eucalyptus plantation,grassland,waste land and expansive soil.

通过对元谋干热河谷区加勒比松人工林、加勒比松+车桑子人工混交林、山合欢天然更新林、车桑子+山毛豆人工混交林、桉树人工林、草地、荒坡、膨胀土8种植被类型林地1 m土层内不同层次雨季(8月2日~9月2日)土壤水分含量的分析研究得出：在雨季8种植被类型林地土壤的水分含量均较低，因其土壤的物理性能较差，故蓄水保水能力也较差；各植被类型林地土壤的有机质、养分含量均极低，按照土壤养分含量分级标准，各植被类型林地土壤的养分含量均在6级以下。

Start the action by finding the alleyway door (in front of the vehicle with the car alarm).

找到一个巷子，巷子里有辆车的报警器在响，从车前的门口进入。

Dental Unit, Ski Air Compressor, Ski LED Curing Light, Ski Automatic Drainage System, Ski Lubricators, Ski Hand-piece Oil, Ski High Speed Diamond Burs, Ski high Speed Hand-piece , Ski Low Speed Hand-piece, Doctor Chair,, Tube of Hand-piece, all kinds of Turbines, Disinfection Stove, WOODPECKER Scalars, Teeth Grindermade in Korea, Amalgamator, Apex Locator, Bearing of Hand-piece, Dental Operation Instruments, Impression Materials used in teeth and so on.

牙科综合治疗机，品牌光固化机；无油空气压缩机；空压机自动排水系统；注油清洗机；手机润滑剂；高低速涡轮机；高低速手机用各类车针，灭菌器脉动真空系列；WOODPECKER超声波洁牙机；南韩打磨机；银汞调和机；手机；车针；手机轴承手机管；医师座椅；牙科医疗小型器械；牙科手术器械；牙齿加工、制作、矫正、取模材料等牙科耗材…口腔耗材牙用手术器械

Dental Unit, Ski Air Compressor, Ski LED Curing Light, Ski Automatic Drainage System, Ski Lubricators, Ski Hand-piece Oil, Ski High Speed Diamond Burs, Ski high Speed Hand-piece , Ski Low Speed Hand-piece, Doctor Chair,, Tube of Hand-piece, all kinds of Turbines, Disinfection Stove, WOODPECKER Scalars, Teeth Grindermade in Korea, Amalgamator,, Bearing of Hand-piece, Dental Operation Instruments, Impression Materials used in teeth and so on.

我们的主要产品有：牙科综合治疗机；国内外各大品牌光固化机；无油空气压缩机；空压机自动排水系统；清洗注油机；手机润滑剂；高低速速涡轮机；高低速手机用各类车针，灭菌器脉动真空系列；WOODPECKER超声波洁牙机；南韩打磨机；银汞调和机；手机；车针；手机轴承手机管；医师座椅；牙科医疗小型器械

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐