That's the first difference between a beam of ordinary light and a laser beam.

這是第一個(gè)不同點(diǎn)在普通光束和鐳射光束之間一级黄片男人与女人交配视频。

A beam of light generated by a laser .

由激光器發(fā)出的一束光。

Well, those are the three differences between a beam of ordinary light and a laser beam.

好了，那些是三個(gè)不同點(diǎn)在普通光束和鐳射光束二者之間。

The PTK mode of excimer laser was used to ablate retinal sheet.Total 48 photoreceptor sheets were ablated with three depths and were studied by light and scanning electron microscope.

目的 探討PTK切削方式下婷婷综合热，準(zhǔn)分子激光切削視網(wǎng)膜制備理想感光細(xì)胞片層所需的最佳切削深度。

In this paper, the effect of the absorption spectrum radiated by laser, ultroviolet and red light on DNA has been studied.

激光對生物的誘變遺傳效應(yīng)的研究狠狠插时时拍，本質(zhì)是激光與 DNA相互作用的結(jié)果国产一区二区三级片网站。

Five minutes is the optimal irradiation time for ALA-PDT by Xe lamp under the same irradiation conditions. Irradiation injury caused by the light alone was slight, but the destruction rate of ALA-PDT was very high. Conclusion: Xe lamp's action spectrum is wider and it's power is higher, so it's better than 532 nm laser for ALA-PDT.

結(jié)果：532 nm連續(xù)激光和脈沖激光對K562細(xì)胞的ALA-PDT抑制率均較低，增加光劑量也不能有效提高ALA-PDT的抑制率一级做a爰片性色刺激；氙燈在功率密度為350 mW/平方公分、光照5 min時(shí)就能達(dá)到最佳的光劑量中国黄色片网站，此時(shí)單純光照對K562細(xì)胞的光損傷作用很小且ALA-PDT效率很高黄色首页入口在线观看。

Reflected light was detected by a device so sensitive that it could pick up one returning photon (the quantum-mechanical particles of which light is composed) out of every thousand billion fired by the laser.

接受反射光的設(shè)備具有如此的高敏感性，以至于（量子力學(xué)上的光的組成微粒之一）免费的A片视频在线观看漫画。

Through surveys the He-Ne laser wave length, the sodium lamp, the white light interference experiment, the discussion stripe change and two plane mirror's inclination angle and the parallelism relations, quick observation white light interference skill and principle.

通過測量He-Ne激光波長亚洲美女黄视视频永久久久久，鈉光、白光干涉儀的實(shí)驗(yàn)欧美一级欧美一级在线播电影，討論條紋的變化與兩個(gè)平面鏡的傾角與平行度的關(guān)系久久人妻精品99，快速觀察白光干涉儀的技巧和原理。

Laser-produced light is different from incoherent light. It is essentially of one frequency.

激光器產(chǎn)生的光與非相干光不同国厂狠天一级毛片，它實(shí)質(zhì)上只有一個(gè)頻率亚洲欧美一级A片在线播放。

The operation principles of visible light, infrared and laser stealthy coatings were simply introduced. We analyzed the contraventions existed in producing multiple electro-optic stealthy coatings acting on all the 3 bands of light.

簡述了可見光、激光欧美日韩免费专区在线、紅外隱身涂料各自的作用機(jī)理在线观看av的网址，分析了欲制成光電復(fù)合隱身涂料所必須處理好的三者之間存在的矛盾點(diǎn)。