题目
英语翻译
**** When a CD is played,the laser beam shines on the disk from below and passes through a protective thin transparent layer on the disk to focus on an aluminum reflecting film or signal surface.At the surface where the pits are recorded,the diameter of the laser beam is a mere 1.7 micrometers,Even if the protective transparent layer on the CD becomes dusty or scratched,the laser beam is so finely focused that most of these do not affect playing quality because they are out of focus.
1 the laser beam is so finely focused that most of these do not affect playing quality because they are out of focus.
**** And the laser it self lasts 10 times longer than a diamond phonograph stylus.
2 激光本身也要比留声机的钻石唱针使用寿命久十倍?
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**** When a CD is played,the laser beam shines on the disk from below and passes through a protective thin transparent layer on the disk to focus on an aluminum reflecting film or signal surface.At the surface where the pits are recorded,the diameter of the laser beam is a mere 1.7 micrometers,Even if the protective transparent layer on the CD becomes dusty or scratched,the laser beam is so finely focused that most of these do not affect playing quality because they are out of focus.
1 the laser beam is so finely focused that most of these do not affect playing quality because they are out of focus.
**** And the laser it self lasts 10 times longer than a diamond phonograph stylus.
2 激光本身也要比留声机的钻石唱针使用寿命久十倍?
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提问时间：2021-03-02
答案
1,前面说on the CD becomes dusty or scratched.你说的这句指的是,激光瞄得很准,不会受到CD上面的灰尘和刮伤的影响而导致播放效果下降,因为那些灰尘和刮伤都是在激光光束的聚集点之外的.
2laser这里肯定是代指激光唱片机了嘛.
2laser这里肯定是代指激光唱片机了嘛.
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