英语专业四级听力听写训练 第57期:激光的用途 Applications of Lasers

Applications of Lasers激光的用途

Lasers have numerous applications in various fields.激光在众多领域有着各种各样的应用。

They have made measurement an exact science.激光使得测量成为一门精确的科学。

Astronomers have used lasers to measure the moon's distance from Earth to within a few centimeters.宇航员利用激光把月球到地球的数据测量精确到厘米。

Mappers and builders use laser technology every day.制图和建筑人员每天使用激光技术。

For example, drawing a perfectly level straight line on a construction site is easy using a laser.例如, 使用激光在一个建筑工地画一个完美的水平直线就会变得很容易。

Manufacturers have used lasers for years to cut and join metal parts.制造人员多年来用激光切割及焊接金属零件。

And the jewelry industry uses lasers to write on the surface of the world's hardest substance, diamonds.而珠宝行业使用激光来在世界上最硬的物质钻石的平面上镌刻。

Lasers have also changed the way we live.激光也改变了我们的生活方式。

Super-fast Internet connections let people watch movies and send huge amounts of information at the speed of light.超高速互联网连接以光的速度让人观看电影及发送大量的信息。

Laser printers can print out forms and documents quickly and are relatively low in cost.激光打印机可以相对较低的成本快速打印文件及文档。

Laser barcode scanners have changed how stores record almost everything.激光条码扫描器已经改变了几乎所有的存储记录。

They help businesses keep track of products.他们帮助企业追踪产品。

They help in storage and every detail of the supply process.他们帮助储存及供应过程的每一个细节。