求 科技英语翻译,是科技英语!

好像是科普文章,但后面两句有点难度。以下翻译杜绝机译。翻译准确,达意,请放心。(1) The milestone which marked the beginning of the modern age of computers was the development of the transistors。This device was significantly smaller than the electronic tubes,requied much less electrical power to operate,and generated very much less heat。With the subsequent development circuits,it became possible to design equipment consisting of hundreds and thousands of transistors but requiring minimal space。（1）标志现代计算机时代到来的里程碑是晶体管的开发成功。这种器件比电子管小得多,工作所需的电功率也少得多,而且产生的热量也少得多。随着其后晶体管电路的发展,设计由成百上千个晶体管组成而只需要很小空间的设备成为了可能。(2) To most people,the invention of the transistors meant portabie radios。But to those in the data processing business,it significant the start of the second generation of computers。（2）对大多数人来说,晶体管的发明意味着袖珍收音机。但对从事数据处理业务的人来说,他的意义在于第二代计算机的开始。(3) Significant innovations spurred by intense competition have resulted in enormous increases in computer performance and substantial reductions in price。This trend,established with the introduction of second-generation computers。continues today。。。（3）由激烈的竞争所激励起来的重大发明已经导致计算机性能的巨大提升和价格的实质性下降。今天,这一由第二代计算机的采用所确立起来的趋势还在继续…… (4) This advance has made computers with amazing speed and impressive capability commonplace。（4）这一进展已使具有惊人速度和令人印象深刻的能力的计算机成为寻常的东西。(5) The result is that with a CAD/CAM system engineers and designers can view complex forms from various angles at the push of a utton instead of having to construct costly,time-consuming models and mock-ups。Changes can be made quickly and inexpensively at the keyboard without requiring drawing changes or modification of a physical model。In addition,the display can produce realistic simulatios of product operation before any hardware is actually produced。（5）其结果是,借助于CAD/CAM（计算机辅助设计/计算机辅助制造）,系统工程师和设计师只要按一下按钮,就可以从各种不同的角度观察复杂的形态,而无需费钱的建设和费时的模型和制作。改变可以在键盘上迅速而便宜地做出,而无需改变图纸或修改物理模型。此外,显示器还能在硬件生产出来之前,显示出产品工作状况的实际模拟过程。