科技英语报纸模板.doc

year of the rabbitThe year of the rabbitis China first lunar rover, on November 26, 2013 morning 9 when make, industry of national defence science and Technology Bureau held a press conference, announced the Change three Lunar Rover name for the year of the rabbit. Change three lunar vehicle design quality of 140 kg, is powered by the solar energy, can withstand the lunar surface vacuum, strong radiation, minus 180 degrees Celsius to 150 degrees above zero temperature limit of the extreme environment. The lunar rover with 20 degrees, 20 cm of climbing obstacle capability, and is equipped with a panoramic camera, infrared imaging spectrometer, moon radar, particle induced X ray spectrometer and other scientific detection instrument. 肩部有两片可以打开的太阳能电池帆板，她的腿部是六个轮状的移动装置，上装有一个地月对话通讯天线；头顶的导航相机与前后方的避障相机；负责钻孔、研磨和采Shoulder two can open the solar panels, her leg is mobile device of six wheel shaped, rabbit requirements wheel. In the development of dozens of programs, researchers had produced four wheel, six wheel, eight wheel and crawler type etc. Finally, determining the drive for independent six wheel, four wheel independent steering scheme. Rabbit is provided with one more month dialogue communication antenna; obstacle avoiding the overhead camera navigation camera before and after the party; responsible for drilling, grinding and sampling mechanical arm.High temperature resistant materialsHigh temperature resistant materials including refractory and heat resistant materials, inorganic compounds, there are polymer materials.Refractory material usually refers to the temperature above 1580 inorganic materials. They were built furnace, combustion chamber and other high temperature resistant building materials. General use of quartz sand, clay, magnesite, dolomite as raw material, high temperature insulation coating Zhi Sheng, is a component of inorganic coatings, high temperature in the range of -80 - 1800 , heat conduction coefficient is 0.03W/m.K, the thermal radiation and conduction heat can inhibit the object of high temperature and low temperature object, for the high temperature object to keep 70% of the heat loss. Zhisheng coating on the surface of an object with 8mm at 1100 high temperature insulation coating, the surface temperature can be decreased from 1100 to 100 . In addition to high temperature insulation characteristic of coating and insulation, light weight, convenient construction, long service life, heat insulation, can also be used for inorganic materials, high temperature resistant adhesives using object firmly, attachment. Such as refractory cement, magnesia brick etc. Broadly speaking, the inorganic fireproof, heat resistant materials refers to these compounds, high hardness, brittleness, good resistance to chemical corrosion, and the melting point is in 1500 above, such as high temperature glass, also belongs to the refractory material.Constituent structure主要分金属与非金属化合物和非金属间化合物两类。前者如钨、钼、钽、铌、钒、铬、钛、锆等难熔金属以及稀土金属的硼化物、碳化物、氮化物、硅化物、磷化物和硫化物等；后者如碳化硼、碳化硅、氮化硼、氮化硅、磷化硼、磷化硅等。后者有极重要的用途，可用作高温耐火材料（如磨料、铸模、喷嘴、高温热电偶套管）、耐热材料（如火箭的结构元件、核工程材料、电热元件）、电工材料（如高温热电偶、引燃电极），此外还用作耐化学腐蚀材料和硬质材料等。耐热聚合物可用作耐高温薄膜绝缘材料、耐高温纤维、耐高温涂料、耐高温粘合剂等。按照耐高温的时间，又分瞬间耐高温材料和较长时间的耐高温材料。前者在100010000能耐几秒到几分钟。其中烧蚀材料也是耐高温材料。例如在300600，在空气中能保持它的机械强度、耐化学腐蚀等。The main points of metal and non metal compound and non intermetallic compound two. The former such as tungsten, molybdenum, tantalum, niobium, vanadium, chromium, titanium, zirconium and other refractory metal and rare earth metal borides, carbides, nitrides, silicides, phosphide and sulfides; if the latter boron carbide, silicon carbide, boron nitride, silicon nitride, boron phosphide, silicon phosphide etc. The latter has very important use, can be used as refractory materials (such as abrasive, mold temperature, nozzle, thermowell), heat resistant materials (structural elements, such as rocket nuclear engineering material, electric heating element), electrical materials (such as high temperature thermocouple, ignitor), also used as chemical resistant materials and hard materials etc. Heat resistant polymers can be used as high temperature film insulation of high temperature resistant fiber, high temperature resistant coating, high temperature resistant adhesive material, etc. According to the high temperature time, and instantaneous high temperature resistant material and long time high temperature resistant materials. The former in 1000 10000 a few seconds to a few minutes. The ablative material is high temperature resistant materials. For example, in the 300 600 , in the air, it can maintain the mechanical strength and chemical resistanceBeidou satellite navigation systemBeidou satellite navigation system will BeiDou Navigation Satellite System, abbreviated as BDS: is China being implementedThe Beidou satellite navigation systemGlobal navigation satellite system of independent research and development, independent operation, abbreviated as BDS2-3, Galileo and America GPS, the Russian GLONASS, EU compatible with global satellite navigation system, shared, and said the four major global satellite navigation system. Beidou satellite navigation system in December 27, 2011 to provide continuous navigation and time serviceBeidou satellite navigation system consists of a space, the ground end and customer end of three parts. The spatial side consists of 5 geostationary orbit satellite and 30 non geostationary orbit satellite. The ground end comprises a master station, injection and monitoring stations in several ground stations. The user terminal by the user terminal and GPS, America Russian GLONASS (GLONASS), the EUs Galileo (GALILEO) terminal compatible with other satellite navigation system.The system can be globally all-weather, day and night for all types of users with high precision, high reliable positioning, navigation, and timing services with short message communication ability. 4 Chinese after the production location service equipment manufacturers, will provide the GPS and Beidou system support, will improve the accuracy of positioning. And the unique system of short message service function will be charging, the utility of function remains to be seen.laserIn order to meet the need of military applications, mainly develops the 5 laser technology: the technology of laser ranging. It is the first practical application of laser technology in military. In twentieth Century 60 time end, laser range finder to armed forces, has been developed and produced various types, most of the yttrium aluminum garnet laser, ranging accuracy is 5 meters. Because it can rapidly and accurately measure the target distance, widely used for reconnaissance survey and weapon fire control system. The laser guidance technology. Laser guided weapon of high precision, simple structure, less susceptible to electromagnetic interference, plays an important role in the precision guided weapon. At the beginning of the 70s, laser guided aerial bomb America developed first used in the Vietnam war. Since 80 time, the number of production equipment and laser guided missiles and laser guided projectile is increasing. The laser communication technology. Laser communication capacity, confidentiality good, strong anti electromagnetic interference ability. Optical fiber communication has become the focus of development communication system. Airborne laser communication system, satellites and the submarine laser communication system in the research and development of. The laser technology. Tactical laser weapons made of high power laser, the eye blindness and the photoelectric detector failure. May destroy the aircraft, missiles, satellites and other military targets with high-energy laser beam. For tactical laser weapon of blinding, air defense, is close to the practical stage. For the strategy of anti satellite laser weapons, anti intercontinental ballistic missile, is still in the exploratory stage. The laser simulation training technique. Laser simulation equipment for military training and combat exercises, no consumption of ammunition, safety training, and realistic effect. Military special steel航空发动机航空发动机以后航空3Military special steelResearch and development of military special steel relates to several subjects, and materials science,this one is also Chinas weakness, take the people most concerned about domestic carrier plate to talk about the basic requirements.The strength of steel carrier needs are usually much higher than the ordinary ship steel, especially the section of the deck steel to deal with aircraft engine jet out of the heat, heat resistance of steel demand is very high.Section of the deck plate to impact with dozens of tons of aircraft landing, the whole ship shock resistance ability requirements are high, for special steel with high strength and large ship aircraft manufacturing (high strength low alloy steel) yielding degree in general about 800MPa. The yield strength, when the stress exceeds the elastic limit, the deformation increases rapidly, this time in addition to generate elastic deformation, but also produce some plastic deformation. When the stress reaches B, the plastic strain increases sharply, small platform curve showed a fluctuating, this phenomenon is called the yield. The maximum, minimum stress this stage are called the upper yield point and lower yield point. Due to the lower yield point is stable, so using it as material resistance index, called the yield point or yield strength.electric carsAs everyone knows, the vehicle in the running process, the wheel body rotation will produce a large amount of kinetic energy, and this action能至今为止还在白白地被浪费着。目前机动车的动力95%以上还是需要靠油和气来完成的。油和气都是不可再生的能源，随着使用和依赖的加剧，枯萎现象日趋严重，而且会造成严重的环境污染。目前的电动汽车使用又非常有限，主要原因是充电时间长、续航能力差、价格昂贵等原因所致。新能源电动汽车（机动车动力回收转换装置，发明人：宋广杰），该项专利技术装置，通过特制电机作为系统配件，较好地解决了将机动车的动力回收并转化为电能的装置，从而，把浪费的动能很好地利用起来，动能转化成电能后，又反馈到机动车本身进行驱动的系统装置。 可以使现有的电动汽车一次充电完成后，不再烧油和另外充电，续航能力增加100%-300%，节省成本50%-85%。使用本专利可以使电动汽车变成续航里程最远、使用成本最低的纯电动汽车。Can so far