Question

电器专业的英语，求翻译，很急，谢谢

Even though optical fibers are much smaller than wire pairs, and silica is vastly more abundant than copper, the cost of preparing the rods from which optical fibers are drawn is several times greater than the cost of producing wires. Moreover, studies suggest that this may be the case for some time.
However, fibers system is so many telephone conversations at the same time than wire pairs, and can carry them so much farther without amplification or regeneration, that when there are many telephone calls to be carried between points such as switching offers, fiber systems are economically attractive. Thus the interoffice trunk network will be the first to benefit from this new techonogy.
Competition is more difficult, though, with existing high-capacity systems that use coaxial transmission lines, wave-guide, microware radio and satellites. Larger fiber bandwidth, lower loss, and more reliable optical sources would make optical fiber more competitive in this sector.
The heart of an optical communication system is something which transmits electrical signals: a telephone, computer or cable TV. A light emitting diode or laser converts those signals into light pulses, which travl along a glass fiber. At the receiving end, a photo detector converts them back to electrical signals.
The system provides significant advantages over conventional ones which rely heavily on electrical signals and copper wire, including the handling of large amounts of information; a high-performance laser can produce up to a half-billion light pulses a second. As a result, it is possible to transmit the entire 30-volume Encyclopedia Britannica in a tenth of a second. Since optical communications are free from electromagnetic interference which can cause noise in copper cable, they produce clear signals, despite nearby power lines or electric motors.
Copper wires, although they are insulated, can leak electrical signals and cause cross-talk in nearby wires. Not so with optical communication equipment. A glass fiber cable, moreover, weighs only about 1% as much as the copper cable carrying the same number of signals. Indeed, one a half-inch think can carry as many signals as a copper-cable as big as a man’s arm. Then, too, since glass fibers carry light rather than electricity, there’s no danger of sparks in dangerous environments like chemical plants or nuclear reactors.

Answer 1

虽然光学纤维明显小于导线对,并硅是有极大丰富的成本比铜,所制备的杖从光学纤维均大于抽出几次生产成本的电线。此外,研究认为,这可能是个案一段时间。

然而,纤维系统是如此多的电话交谈,在同样的时间比电线双,可以携带他们这么多远而不会放大或再生,等到有了许多电话必须进行的点之间,譬如开关提供光纤系统是一种经济上的吸引力。因此办公室间的树干网络将首先受益的从这个新开纳杰技术。

竞争是更加困难的,虽然,与现有大容量的系统,该系统使用同轴传输线,波导,微波无线电和卫星。损失更大带宽、低纤维以及更可靠的光学来源将使光纤更有竞争力的这一部分。

心脏的光通信系统是将它传送电子信号的东西:一个电话、计算机或有线电视。一种发光二极管或激光脉冲光信号转换成那些,这travl沿着一条玻璃纤维。在接收端,光电探测器将他们转换成回电子信号。

该系统提供了重要的优势在很大程度上依赖传统的电子信号、铜线等,包括处理大量的资讯;高性能的激光可制造一个5亿光脉冲,一分一秒。作为一个结果,这是可能的30-volume传送整个大英百科全书在以及刚过去的十分一秒。自从光学通讯都是免费的,这可能会导致从电磁干扰噪声在铜质线缆,他们产生明显的信号,尽管附近的电线或电动马达。

铜导线,尽管它们都作了隔热处理,能泄漏电流信号而引起的相声在附近的电线。光通信设备不是这样的人。玻璃纤维电缆,此外,体重也只有约1%的铜线缆尽可能多的携带相同数量的信号。事实上,一个是half-inch认为可以把尽可能多的信号作为copper-cable大如男人的手臂。接着,还有,因为玻璃纤维携带之光,而不是电、没有危险的火花,在危险的环境中喜欢化工厂或者核反应堆。