英语科技文双语版

The main steps in processing su steel are as follows: wrought iron is put into the furnace and heated with a blast, then one end of a cast-iron block is placed obliquely in the furnace opening to be heated. The blast is maintained so that the temperature continues to rise. When a furnace temperature of about 1,300℃is reached, the cast iron will melt and start to drip, while the wrought iron is softened. The cast-iron block is then held in tongs from the outside to let the molten cast iron drip evenly onto the wrought iron, which is being steadily stirred to cause strong oxidation. After dripping, the blast is stopped and the steel mass taken out and hammered to remove impurities. This dripping should generally be done twice. Su steel smelting has two advantages: ① during the pouring process there is strong oxidation which results in separation of slag and iron, the wrought iron being soft in structure and containing large amounts of oxide impurities, and also silicon, manganese and carbon. ② after oxides in the wrought iron cause oxidation of the carbon in the cast iron, iron will be deoxidized, giving higher rates of metal reclamation.
3.石墨晶体结构遭到破坏时，总是碎化为微小尺寸的片状粉末。孤立的石墨烯片在其边缘存在大量的悬挂键，使得石墨烯片的能量较高，状态也不稳定。石墨烯片卷曲形成碳纳米管后，悬挂键减少，系统能量相应降低。
When a graphite crystal is crushed, it breaks into micro-scaled laminar flakes. There are many dangling bonds on the edge of an isolated graphite micro-sheet which elevates its energy and makes it unstable. When a graphite micro-sheet curls into a nanotube, the number of dangling bonds decreases, and the system energy is reduced accordingly.
科技文
1.单心室辅助人工心脏应用于实验动物山羊，存活11天又23小时。在存活期间，动物心电图，中心静脉压，呼吸，体温等参数基本正常。石泵分流量可调，驱动装置连续工作11天，性能稳定可靠。动物死后的病理解剖表明，死亡的主要原因是肾动脉的广泛性血栓引起的急性肾功能衰竭。
A univentricular assistant artificial heart was applied to the experiment goat, which survived for 11 days and 23 hours. During the period of survival, the parameters such as E.C.G., central venous blood pressure, respiration and temperature appeared to be essentially normal. The necessary amount of blood flow was well regulated by the pump. The driving system worked continuously, smoothly and reliably for 11 days. Postmortem patho-anatomy revealed that the chief cause of the animal’s death was acute renal failure as a result of widespread multiple embolism of renal arteries.
7.“苏钢”操作的要点是：先把料铁放到炉里鼓风加热，后把生铁的一端斜放到炉口里加热，继续鼓风，使炉内温度不断升高。当炉温在摄氏一千三百度左右的时候，炉内的生铁不断地往下滴铁水，料铁已经软化。然后钳住生铁块在炉外的一端，使铁水均匀淋到料铁上，并且不断翻动料铁。这样就产生剧烈的氧化。淋完以后，停止鼓风，夹出钢团，砧上锤击，去除夹杂。一般要淋两次。“苏钢”冶炼高明的地方主要有二点：一是料铁组织疏松，含有大量的氧化夹杂，硅、锰、碳含量也比较高，炼的时候氧化剧烈，造成一定的渣、铁分离。二是料铁中铁的氧化物氧化了生铁中的碳以后，铁便被还原出来，这样就提高了金属的收得率。
A magnetic compass is an instrument showing direction based on the phenomenon that a magnetic bar or needle swingingfreely in the earth’s magnetic field will direct itself to lie in a magnetic south-north position. It differs from the south-pointing chariot in that the latter has differential gearing. The term “compass” in this article includes all the various models in differenthistorical periods, among them there are the Sinan, the Zhinanyu and the Zhinanzhen. The inventor and the exact invention dates remain unknown, but it is clear that the primitive magnetic south-pointing instrument appeared very early in China as a result of the knowledge people gained over long years of labor.
2.中国已经成功地发射了第一颗试验通信卫星。这颗卫星是由三级火箭推动的，一直运转正常。它标志着我国运载工具和电子技术方面进入了一个新阶段。
The successful launching of China’s first experimental communication sateΒιβλιοθήκη Baidulite, which was propelled by a three-stage rocket and has been in operation ever since, indicates that our nation has entered a new stage in the development of carrier rockets and electronics.
6.原油一般发现地下之深处，只通过对地表面的研究是不能确定油的存在的。因此必须进行地下岩石结构的地质勘测。如果认为某地区的岩石中有油，就架起钻井机。钻井机最显目的部分是称之为起重机的高塔。钻孔后放下管道，起重机就是用来起吊一节节管道的。钻井时，将钢管压进孔道，既能防止四壁向内塌陷，又能防止水灌进孔道。一旦发现了油，油管的顶端就牢牢地套上一个盖子，这样油便通过一系列的阀门源源不断地喷出来。
4.舌诊是传统中医诊病的重要方法，然而传统舌诊中存在一个很大的问题是具有主观性，难于进行定量化描述。随着计算机技术的发展，图像处理和模式识别技术正在用于舌诊的辅助诊断。
Tongue diagnosis is an important diagnostic method in traditional Chinese medicine. However, one important problem in tongue diagnosis is that its practice is subjective, qualitative and difficult in automated diagnosis. Recently it is a trend to utilize the image processing and pattern recognition technology in aid of the quantitative analysis of tongue image.
As oil is found deep in the ground, its presence cannot be determined by a study of the surface. Consequently, a geological survey of the underground rock structure must be carried out. If it is thought that the rocks in a certain area contain oil, a drilling-rig is assembled. The most obvious part of a drilling-rig is a tall tower which is called a derrick. The derrick is used to lift sections of pipe, which are lowered into the hole made by the drill. As the hole is being drilled, a steel pipe is pushed down to prevent the sides from falling in and to stop water filling the hole. If oil is struck, a cover is firmly fixed to the top of the pipe and the oil is allowed to escape through a series of vales.
5.指南针是利用磁铁在地球磁场中的南北指极性而制成的一种指向仪器，它和以差动齿轮结构的指南车不同。我们现在所说的指南针是个总的名称，在各个不同的历史发展时期，它有不同的形体，也有不同的名称，如司南、指南鱼和指南针。关于指南针的最初发明者和发明年代现在无可查考。但是有一点是清楚的：指南针是我国古代劳动人民在长期的生产实践中集体智慧的结晶。