But this study is the first to experimentally show that optical precursors exist at the single-photon level, and that they are the fastest part of the single-photon wave packet.
而这次的研究则是第一次用实验证明，在单个光子层次上也存在着光前驱，而且它们也是单个光子的波包中最快的部分。
It has been shown experimentally that birds can align themselvesto their normal migration routes in blue light but have trouble doing so inyellow or red, so the link seemed worth pursuing.
实验表明，在蓝光中鸟类可以按照正常迁徙路线飞行，而在黄光或红光中则做不到，因此其中的关联值得探讨。
This is experimentally challenging, but advances in imaging technology have made these experiments possible in worms, flies and even the mammalian brain.
这是实验具有挑战性，但在成像技术的进步已经在蠕虫，苍蝇，甚至是哺乳动物大脑这些实验的可能。
The new class filters need half of the permutation filters' parameters, but they give almost equal performances with permutation filters experimentally.
该滤波器较一般置换滤波器的参数数量减半，但实验表明，它们的性能却非常接近。
I do not know if this is experimentally verifiable, but I have found that just remembering in detail those moments when I have felt high, vibrant and OK can lift me up out of the gray soup for a time.
我不知是否能用实验的方法来证实。但我发现当我热情高涨，富有活力，感觉良好时，详细的回忆起这些好的时候能使我在一段时期内摆脱这些痛苦的事情。
Over the years, physicists have theorized about anti-matter, but it wasn't confirmed to exist experimentally until 1932.
物理学家以前在理论中预言了反物质的存在，但这一点直到1932年才在实验中得到证实。
Surgically removing visceral fat has been done on animals and some humans experimentally, but it is far more difficult and isn't likely to be a weight-loss option anytime soon.
通过手术减少腹部脂肪的做法有过动物和人体试验，但技术难度很高，近期不太可能成为减肥的方法。
The transition state plays an important role in mechanism research of chemical reactions, but it is hard to determine experimentally.
化学反应过渡态结构对化学反应机理的研究有重要作用，但实验上无法直接得到。
The investigations were conducted experimentally on not only its petrogrphic structure but alsothe properties of its compressive strength, apparent porosity, apparent density and moisture content.
报道了玻璃-云母多孔材料研制的结果，研究了该材料的岩相结构，对材料的抗压强度、显气孔率、体积密度进行了测试。
The investigations were conducted experimentally on not only its petrogrphic structure but alsothe properties of its compressive strength, apparent porosity, apparent density and moisture content.
报道了玻璃-云母多孔材料研制的结果，研究了该材料的岩相结构，对材料的抗压强度、显气孔率、体积密度进行了测试。
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