查询词典 ir
- 与 ir 相关的网络例句 [注:此内容来源于网络,仅供参考]
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Methoxycoumarin-3-carboxylic acid geranyl ester was synthesized from geraniol and 8-methoxycoumarin-3-carboxylic acid and its structure was characterized by IR, HRMS, 1H NMR and 13C NMR.
采用酰氯酯化法,以8-甲氧基-香豆素-3-甲酸与香叶醇为原料合成了8-甲氧基-香豆素-3-甲酸香叶酯,经IR,HRMS,1H NMR,13C NMR等鉴定,证实了其结构。
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We used BET,FT-IR,XRD,TPR techniques to investigate the compression strength, the BET and the pore structure of catalysts by changing some factors such as the glutinousness and concentration of adhesive ,the ageing time and temperature and so on.
为解决催化剂侧压强度的不足,我们在实验室进行了超细镍基负载型催化剂实验室小试成型工艺条件研究,用硅溶胶及Ni~(2+)-硅溶胶两种不同的胶粘剂进行挤条成型,通过BET、FT-IR、XRD、TPR等技术考察了催化剂在成型过程中,胶粘剂的浓度、粘度,湿/干粉比,催化剂老化时间,以及焙烧温度等因素对催化剂的强度以及催化剂的比表面积和孔结构的影响。
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Cephalotaxine ester of 2-oxo-6-methylheptanoic acid was treated with lithium diisopropylamide and Me O-(1-methoxyisopropyl)glycolate to give a mixture of homoisoharringtonine and its stereoisomers with 56% yield. The four stereoisomers separated by TLC showed identical mass spectra and almost superimposed IR but with different 1H NMR spectra. The configuration of the 2'-C and 3'-C of the four isomers were postulated based upon their 1H NMR spectra as compared with the 1H NMR spectra of isoharringtonine and its stereoisomers.
2-氧代-6-甲基庚酰基三尖杉碱(3)与0-(1-甲氧基异丙基)羟基乙酸甲酯(4)在强碱性试剂二异丙胺锂存在下,起亲核加成反应,反应中间体5在室温用酸性丙酮水解,得到一种新的三尖杉酯类生物碱一一高异三尖杉酯碱(6c)及其立体异构体(6a、6b、6d)的混合物,产率56%、通过制备薄层层析分得这四个立体异构体,它们的1H NMR和异三尖杉酯碱及其立体异构体的1H NMR类似,推定了它们的绝对构型。
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We determine model rat FBG,fasting insulin,sugar tolerance,insulin tolerance,insulin sensitivity index,and insulin resistance index,lipid metabolism and free fatty acids content of serum and hepatic,HE staining of pancreas,to observe the effects of Huang Qi San on glycolipid metabolism and insulin resistance in T2DM-IR.
黄芪散干预实验性2型糖尿病胰岛素抵抗的作用及机制研究通过建立STZ所致DM小鼠模型、氢化可的松琥珀酸钠诱导的IR小鼠模型初步评价黄芪散对DM及IR的干预作用。
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Bounderby's gusty way to boast to all his world that he didn't care about your highly connected people, but that if his wife Tom Gradgrind's daughter did, she was welcome to the ir company .
葛擂硬的女儿―喜欢的话,那么她跟他们来往也就听便吧。
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In this thesis, an evaluation methodology of IR screening smoke's countermeasure effect is suggested based on grayness system and a mathematical model is deduced.
提出了基于灰色系统观点的定量评估方法,并导出其数学模型,通过计算机仿真研究及讨论,获得了一系列结论。
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In this thesis, an evaluation methodology of IR screening smoke's countermeasure effect is suggested based on grayness system and a mathematical model is deduced. A series of conclusions are obtained by computer simulation and discussion.
提出了基于灰色系统观点的定量评估方法,并导出其数学模型,通过计算机仿真研究及讨论,获得了一系列结论。
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Other anti-counterfeiting technologies such as colour-shifting inks, UV/IR reactive inks, Guilloche Designs and taggants, can also be easily integrated.
其他防伪技术,如色移油墨,紫外/红外活性墨水,扭索饰设计和无痕标记物,也可以轻松集成。
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Oleyl acetate was characterized using IR and 1H NMR. Microcapsules containing oleyl acetate were prepared through complex coacervation of whey protein and gum acacia. The coacervation process was optimized by varying experimental conditions such as pH, WP to GA ratio, wall materials concentration etc.
以高分子电解质乳清蛋白和阿拉伯胶进行复凝聚制备聚合物微胶囊,对影响复凝聚的pH、两种电解质的配比及其浓度等因素进行了考察。
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Under the guide of phase equilibrium results, over 150 new solid complexes were prepared. IR, reflecting, UV, FS, and Ramman spectra for these complexes were investigated and the regularity of "Tripartite effect","Tetrad effect","Nephelanxetic effct","Oddo Harkins" was observed.
在相平衡结果指导下制备了150余种新型固态配合物,研究了它们的IR光谱、反射光谱、UV光谱、FS光谱和拉曼光谱,发现了其中存在的"三分组效应"、"四分组效应"、"电子云扩大效应"、"Oddo-Harkins规律"。
- 相关中文对照歌词
- Violeta (Fricote)
- Calentándote
- Que La Dejen Ir Al Baile Sola
- Musica Killa
- Pode Ir
- Déjame Ir
- Vueltas En El Aire
- First Time
- Deixo Você Ir
- Me Gustas Tu
- 推荐网络例句
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Hanna: That's over now, isn't it?
都结束了,对吗
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You must be ill. You look so pale.
你一定是病了,你的脸色苍白。
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After proper differential delay, an UWB monocycle pulse with 84-ps width and the fractional bandwidth of 153% is generated after photodetection.
两个高斯脉冲经过适当的延时,光电检测后产生超宽带单周期脉冲,其脉冲宽度为84ps,相对带宽为153%。