查询词典 spectroscopic

This dissertation is concerned with the spectroscopic study of the millimeter-wave, near infrared and visible absorption spectrum of gas phase transient species.

本论文对与星际化学和大气化学密切相关的几种瞬态分子的气相吸收光谱和结构进行了研究，包括CN自由基，N_2~+离子和CS~+离子的电子振转光谱和HCBr自由基的纯转动光谱。

In addition, with the effective technique to recognise different types of high-lying states, the spectroscopic properties of Rydberg states and valence states in the region between 41800 cm-1 and 43800 cm-1 are discussed and analyzed in detail.

另外，不但提供了一种有效识别不同类型的高激发态的鉴别技术，而且还对处于41800 cm-1到43800 cm-1能域内的Rydberg态和价态的光谱特性进行了详细分析和讨论。

A novel method to determine isoniazid with high sensitivity and good selectivity has been established by using Cu as a spectroscopic probe ion.

以Cu为光谱探针建立了一种高选择性、高灵敏度测定异烟肼的新方法。

The two catalysts supported on USY zeolites with surface acid amounts of 626 and 203μmol/g, respectively, showed excellent sulfur tolerance, while the catalysts of higher and lower acid amount showed decreased sulfur tolerance. Energy dispersive spectroscopic analysis proved that the support with a large acid amount adsorbed more sulfur, which might lead to the lower sulfur tolerance of the catalyst.

结果表明硫含量为200μg/g时，载体酸量为626和203μmol/g的两个催化剂的耐硫性最好，而载体酸量更低和更高的催化剂的耐硫性较差，表明载体的酸量太大或太小都不利于催化剂的抗硫性。X射线能量散射分析表明，酸量大时S在酸性位吸附很多，这可能导致催化剂中毒。

A new alkaloid named Mequinine (1) was isolated from Meconopsis quintuplinervia Regel,its structure was elucidated as 1,2, 8,10, 11-pentamethoxy-3-hydroxy-12-hydroxymethylberberine by spectroscopic means.

从藏药五脉绿绒蒿中分离出—微量生物碱成分，通过光谱方法并与同类化合物比较，鉴定为1，2，8，10，11-五甲氧基，3-羟基-12-羟甲基原小檗碱，命名为脉奎宁。

One by one, every other non-watery explanation for such perfect spherules was ruled out by a combination of spectroscopic and morphological results.

有关这些完美球状体的解释中，所有与水无关的候选者，一个个地被分光仪与形态学结果排除了。

They concluded from the mid-infrared spectroscopic observations that there was strong evidence for silicates or rocky material exposed by the impact.

研究者们在中红外光谱仪的观测中发现了强有力的证据，表明撞击暴露出一些硅酸盐或岩石物质。

Alkaline earth sulfides MS, alkaline earth selenides MSe, MS1-xSex,gallium sulfide Ga2S3, oxysulfide MLaGa3OS6, complex sulfides MGa2S4 and Ba2ZnS3 doped with rare earth ions Eu2 , Ce3 , Tb3 , Ho3 , Tm3 were synthesized and their spectroscopic properties were studied.

合成了掺Eu2 ， Ce3 ， Tb3 ， Ho3 ， Tm3 等稀土离子的碱土硫化物MS，碱土硒化物MSe，碱土硒硫化物MS1-xSex，硫化镓Ga2S3，氧硫化物MLaGa3OS6，和复合硫化合物MGa2S4， Ba2ZnS3，并研究了它们的光谱性质。

The spectroscopic properties (λ〓〓,λ〓〓,φ,τ, k〓, k〓) of 〓 were also measured. It was found that the energies of absorption and emission maximum is red-shifted for both electron-withdrawing and electron-donating substituents compared to that of parent 〓 complex.

发现无论X是吸电子取代基还是给电子取代基，配合物的吸收峰和发射峰与母体化合物〓相比均向红移；常温下，具有吸电子基的配合物与具有给电子基的配合物相比，有较高的发光量子产率和长的激发态寿命。

Electron transfer reaction between the radical cations of purine nucleotides and some aromatic amino acids was studied by use of pulse radiolytic techniques. Time-resolved spectroscopic evidence revealed that the one-electron-oxidized radicals of dAMP and dGMP can be efficiently repaired by tyrosine and tryptophan.

鉴于在DNA光敏损伤过程中主要生成嘌呤碱基阳离子自由基，利用脉冲辐解技术研究了嘌呤碱基阳离子自由基与部分芳香氨基酸的相互作用，获得了酪氨酸和色氨酸对单电子氧化的dAMP和dGMP经快速电子转移修复的瞬态吸收光谱证据。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了