当你在早晨面对一面镜子梳你的头发时，当你在雨后看到彩虹时，在那些挽救生命的医学设备里，当你读这篇文章时，如你所见，是光在工作。
When you look into a mirror in the morning to comb your hair, when you see a rainbow after it rains, in medical devices that save lives, as you read this page, as you see, optics is at work.
另一方面，随分梳辊速度的降低，纱线不规则性减少，纱线强力增加。
On the other hand, high opening roller speeds reduce yarn irregularity and imperfection while increasing tenacity.
另一方面，随分梳辊速度的降低，纱线不规则性减少，纱线强力增加。
On the other hand, high opening roller speeds reduce yarn irregularity and imperfection while increasing tenacity.
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