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Methyl thioacetate was prepared by using acetyl chloride and methyl mercaptan as starting raw material in this paper.The yield of product is 69.3%.Itcan be used in seasoning flavor.

对可用于各种调味香精的食用香料硫代乙酸甲酯的合成进行了初步研究,产率达到693%,对所合成的产品做了谱分析和质子核磁共振分析,确定了其化学构。

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This paper has studied the phthalocyanin complex of Cobalt synthesized by benzene bitter wine-urea law,and after depuration,an infrared, ultra-violet spectrograph determination is carried.

文章主要研究了苯酐-尿素法合成酞菁钴、并对其进行、紫谱测定、合成及表征果表明,谱表征推测构可靠,紫谱分析表明有特征吸收峰之处。

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This system has superior performance in image quality, space resolution , ?m and nm Cathodoluminescence image and spectrum analysis of semiconductor materials.

该系统在图像质量、图像空间分辨、阴极荧成像及谱分析等方面具有优越的性能。

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Aim To validate spectrum analysis of oxalyl fluoride neutral molecule(FCO)2 and study vibrational mode of the two configuration.

果得到了与谱分析一致的果,草酰氟分子有平面反式和顺式2种构像。

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Using ultraviolet spectrum, fluorescence spectrum and Fourier-transform infrared spectrum, the secondary structure of polyhedrin was studied.

对多角体蛋白进行紫、荧谱分析,并通过去卷积的方法分析了该蛋白的酰胺Ⅰ带。

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考研英语阅读高分必背

He says, “It is easy for a patient’s hair to get in the way and block the signal” with conventional fNIRS technology. “

他说,“用传统的近红外分析法,头发很容易就纠缠在一起,影响到信号的传递。

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美国历史频道纪录片《宇宙》

One of the ways we analyze samples is to fly mass spectrometers through cometary debris that's coming off the comet when it's active.

一个分析样本的方法使用分析仪分析透彗星的结构。

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周日奥秘揭晓

The problem with HD1 and Glz13 is that they haven't been confirmed spectroscopically.

HD1星系和Glz13星系的问题在于它们尚未通分析得到确认。

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Lex Fridman Podcast

This will be able to see crazy stuff like that, spectroscopy, imaging.

这将能够观测到那样的疯狂事物,如分析和成像。

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学人 Science and technology

How quickly the sound changes pitch and how much it does so Donna fits Patrick a chemist at university college cork who developed the Bard's technique says the change from high notes to low and then back again.

声音变音调的速度以及变的程度,唐·菲茨帕特里克说,她是科克大学学院的一名学家,开发了广声学溶解分析技术。从高音到低音再回到高音的变

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学人 Science and technology

But from another spectroscopic analysis, based on the electrons, they showed that its gold was an impure alloy, in contrast to the near 24-carat version of the metal used for coins made in Rome.

但是,根据另一项基于电子的分析,他们表明黄金是一种不纯的合金, 这与罗马制造的硬币所用的近 24 克拉的金属形成鲜明对比。

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学人 Books and arts

Greatest painter enjoys global respect The Reichs Museum in Amsterdam invited the public to follow centimeter by centimeter, a revealing spectroscopic examination of Re that's the night.

最伟大的画家享有全球尊重 阿姆斯特丹的莱克斯博物馆邀请公众跟随厘米-by-厘米,一个揭示性的分析,那是夜晚。

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Knowable

Astronomers needed sensitive spectroscopy to detect the minute motions of stars that would indicate the gravitational tug of an orbiting planet.

天文学家需要使用高灵敏度的分析技术,来探测恒星极其微小的运动,这些运动能表明有行星在围绕其运行所产生的引力牵引。

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周日奥秘揭晓

The spectral analysis reveals the strength of the gravitational interaction between the two celestial objects and, indirectly, the planet's mass as well.

分析揭示了这两颗天体之间的引力相互作用强度,间接地也显示了这颗行星的质量。

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Crash Course Physics 速成课物理

But today, you learned about how to analyze the composition of a light source using diffraction grating and spectroscopy.

但是今天,您了解了如何使用衍射栅和分析源的成分。

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学人 Science and technology

Others, copying them added thalium 1861 and indium 1863 spectroscopic analysis is greatest triumph though was helium 1868.

其他人仿效他们,在1861年添加了铊,在1863年添加了铟,但分析最大的成就还是在1868年发现了氦。

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周日奥秘揭晓

That's comparable to that of GN-z11, the record holder of the farthest galaxy found and confirmed spectroscopically.

那与GNz11星系相当,后者是迄今为止通分析确认的最遥远星系。

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周日奥秘揭晓

The spectral analysis reveals the strength of the gravitational interaction between the two celestial objects and, indirectly, the planet's mass.

分析揭示了两颗天体之间的引力相互作用强度,间接地反映了这颗行星的质量。

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周日奥秘揭晓

The spectral analysis shows that the GRB originated 2 billion light-years away in the direction of the constellation Sagitta (Suh-jit-uh), resulting from the supernova of a massive star ending its life and forming a black hole.

分析显示, 此次伽马射线暴源于人马座方向, 距地球20亿年,是一颗巨型恒星生命终结发生超新星爆发、形成黑洞时产生的。

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周日奥秘揭晓

Although HD1 appears red, a detailed spectroscopic analysis of this galaxy reveals that it is unusually bright in the ultraviolet region of the EM spectrum.

尽管HD1看起来是红色的,但对该星系的详细分析显示,它在电磁波的紫外区域异常明亮。

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周日奥秘揭晓

And when Webb took the spectra of one such galaxy, it found signatures of oxygen, hydrogen, and neon flourishing there.

当韦伯对这样一个星系进行分析时,它发现了氧气、氢气和氖气繁荣存在的迹象。

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