UC知道英语文章在线翻译2
来源：百度知道 编辑：UC知道 时间：2024/05/31 07:15:48
帮我翻一下，急！
.Since its invention 40 years ago, the laser has become a nearly ubiquitous device. Teachers and tour guides use its slender beam as a high-tech pointer. Supermarket clerks use lasers to read the bar codes on groceries, and music lovers enjoy high-quality recordings thanks to the miniature lasers in their compact-disc players. All these lasers rely on the same principle: a huge number of atoms or molecules---from the millions to the trillions---working together to produce an intense, monochromatic beam of light.
Every laser contains two essential components: an optical, resonator, usually formed by two aligned mirrors that reflect light back and forth; and a laser medium positioned between the mirrors, which generates and amplifies the light. In the helium-neon laser, for example, this medium is a gas; in the neodymium-YAG laser the medium consists of neodymium ions embedded in an yttrium aluminum garnet crystal.
.Since its invention 40 years ago, the laser has become a nearly ubiquitous device. Teachers and tour guides use its slender beam as a high-tech pointer. Supermarket clerks use lasers to read the bar codes on groceries, and music lovers enjoy high-quality recordings thanks to the miniature lasers in their compact-disc players. All these lasers rely on the same principle: a huge number of atoms or molecules---from the millions to the trillions---working together to produce an intense, monochromatic beam of light.
Every laser contains two essential components: an optical, resonator, usually formed by two aligned mirrors that reflect light back and forth; and a laser medium positioned between the mirrors, which generates and amplifies the light. In the helium-neon laser, for example, this medium is a gas; in the neodymium-YAG laser the medium consists of neodymium ions embedded in an yttrium aluminum garnet crystal.
自40年前发明的激光已成为一个几乎无所不在的设备。教师和导游利用其细长梁作为高科技指针。超市职员使用激光读取条形码杂货，和音乐爱好者享受高品质的录音感谢微型激光器在其紧凑的光盘播放器。所有这些激光器依靠同样的原则：大量的原子或分子---从数百万到数万亿---共同努力产生激烈，单色光束。
每一个激光包含两个重要组成部分：一个光学，谐振器，通常是由两个不结盟镜子，反映轻来回;和激光介质的位置之间的镜子，它的产生和放大光。在氦氖激光，例如，这个媒介是气体;在钕- YAG激光介质由钕离子嵌入在一个钇铝石榴石晶体。