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orientation of
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  取向
     A Study on the Value Orientation of Modern Mathematics Curriculum
     现代数学课程的价值取向研究
短句来源
     A Study on the Value Orientation of Senior High School Mathematics Curriculum
     高中数学课程价值取向研究
短句来源
     Research on the Value Orientation of Discipline Practice in Elementary and High Schools in Current China
     当代中国中小学纪律实践价值取向研究
短句来源
     A Study of the Evolution of Value Orientation of New Period Literary Theories
     新时期文论价值取向历程研究
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     ON STANDARD POLE FIGURES AND PROBLEMS IN THE DETERMINATION OF ORIENTATION OF LiNbO_3 AND LiTaO_3 SINGLE CRYSIALS
     LiNbO_3和LiTaO_3晶体劳埃定向标准极图和取向测定中的问题
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  方向
     ON THE BASIC ARCHITECTURAL CONCEPTS AND THE ORIENTATION OF ARCHITECTURAL CREATION
     建筑基本概念和建筑创作方向
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     THE ORIENTATION OF CRUSTAL STRESS DETERMINED FROM BOREHOLE BREAKOUTS
     根据钻孔崩落椭圆确定地壳应力方向
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     DETERMINATION OF THE ORIENTATION OF THE CRUSTAL STRESS !N CENTRAL HEBEI PLAIN BY BOREHOLE BREAKOUT METHOD
     用孔壁崩落法测定冀中平原地区地壳应力方向
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     Analysis of the Agricultural Ecosystem ofXingji Township and the Orientation of Regulating the Ecological Structure
     邢集乡农业系统分析与调整生态结构的方向
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     Study of a New Method on Measuring the Orientation of Material Fiber
     一种测量物质纤维方向的新方法的研究
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  定位
     A Study on Orientation of the Local Colleges
     地方高校定位研究
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     The Civil Character and Historical Orientation of the Dynasty of Nan Song Music Culture
     论南宋音乐文化的世俗化特征及其历史定位
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     A Physiological Study of Orientation of Occlusal Plane in Complete Dentures Construction
     总义齿咬合平面定位的生理学研究
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     Applied Anatomy on the Orientation of the Structures in Surgery of Posterior Cranial Fossa
     颅后窝手术中结构定位的应用解剖学
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     The Absolute Orientation of Analytical terrestrlal photogrammetric Model to a free-network and Deformation Analysis
     解析地面摄影测量模型在自由网中的绝对定位与变形分析
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  “orientation of”译为未确定词的双语例句
     The Study on the Theory and Practice of Market Orientation of Enterprises
     企业运用市场导向的理论与实践研究
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     Image Narrative: The Visual Orientation of Contemporary Culture
     图像叙事:当代文化的视觉转向
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     Strategic Orientation of Technological Innovation in Entrepreneurial Firms
     创业型企业技术创新的战略导向
短句来源
     DETERMINATION OF LONGITUDE ORIENTATION OF THE DOPPLER (LASER) NETWORK
     多普勒(激光)测地网经度零点差的测定
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     The Orientation of English Modal Auxiliary Verbs
     英语情态动词“指向”问题初探
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  orientation of
The wrist of the robot including a specially designed link mechanism can maintain the position of the spraying point on the surface of the master pattern whatever the orientation of the gun.
      
Second, to satisfy the new constraint, according to the positing solving algorithm, the position and orientation of an active part are modified with minimal adjustment after the part has satisfied the affirmed constraints.
      
Initially, intergranal thylakoid sites were reduced, and the longitudinal orientation of grana was disturbed.
      
Design of the Suboptimal Profiled Relay Control of Orientation of the Spacecraft Having Elastic Structural Elements with Regard
      
Design of a fuzzy adaptive algorithm to control orientation of a large space structure during the progress of in-orbit assembly was considered.
      
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The absorption spectra of cadmium sulphide single crystals were observed with natural light and polarized light, one piece of the crystals having a thickness of about 0.1 mm and another about 0.05 mm. At room and liquid air temperatures, the absorption spectra observed with natural light indicate that the wavelength of the long wavelength limit of Cd S depends upon the thickness and the temperature of the crystals. A change of the wavelength of the absorption edge which depended upon the orientation of...

The absorption spectra of cadmium sulphide single crystals were observed with natural light and polarized light, one piece of the crystals having a thickness of about 0.1 mm and another about 0.05 mm. At room and liquid air temperatures, the absorption spectra observed with natural light indicate that the wavelength of the long wavelength limit of Cd S depends upon the thickness and the temperature of the crystals. A change of the wavelength of the absorption edge which depended upon the orientation of the electric vector of the polarized light produced by a polaroid plate placed between the crystal and the slit of the spectrograph was observed.

利用CdS单晶体,一块约厚0.1毫米,另一块约厚0.05毫米,观察它们在天然光及偏振光下的吸收光谱。在室温及液态空气温度下,天然光的吸收指示CdS晶体长波吸收边波长随厚度及温度而改变。在光谱仪狭缝前放一偏振片观察到长波吸收边波长随晶体C轴与偏振光电矢量间介角的改变。 在液态空气温度下观察CdS晶体对偏振光的吸收情况,发现在晶体本徵吸收边出现由七条强而锐的谱线组成的一个类氢光谱系。 测量结果发现每条谱线的波数满足下列公式: v_k=20270-11754/k~2(厘米)~(-1),式内k=3,4,5,…9;k=2的线未在光谱中发现。从此式推出的CdS晶体能级的系限加以温度较正为2.41电子伏,与前人用其他方法所得2.42电子伏是很相近的。激子的等价质量与电子质量之比为4.3。 CdS晶体与ZnS晶体结构相似,常数数值相近,由此可以猜测CdS晶体能级的满带可能是属于S-离子。所观察到的激子光谱类氢系可能是S-离子的激发态。

This paper deals with the synthesis of 3-[o-dichloro (or monochloro-) acetamino-p-nitro-plenyl]-propanol (Ⅱ or Ⅱa),structurally varying from chloramphenicol on the one hand by shif-ting the dichloroacetamino group from the aliphatic side-chain to aromatic ring and replacing thesecondary hydroxyl group by hydrogen on the other,for the purpose of investigating the relationbetween biological action and chemical constitution of the antibiotic.The resulting compoundsshowed no inhibiting effect against E.coli,S.thphosa,S.paratyphi...

This paper deals with the synthesis of 3-[o-dichloro (or monochloro-) acetamino-p-nitro-plenyl]-propanol (Ⅱ or Ⅱa),structurally varying from chloramphenicol on the one hand by shif-ting the dichloroacetamino group from the aliphatic side-chain to aromatic ring and replacing thesecondary hydroxyl group by hydrogen on the other,for the purpose of investigating the relationbetween biological action and chemical constitution of the antibiotic.The resulting compoundsshowed no inhibiting effect against E.coli,S.thphosa,S.paratyphi A and B.staphylococcusaureus,and B.subtilis.The compounds Ⅱ and Ⅱa were prepared by a 4-step synthesis starting from o-nitrocin-namyl alcohol (Ⅵ),which upon hydrogenation in the presence of Raney-nickel catalyst led tothe formation of 3-(o-aminophenyl)-propanol (Ⅶ),m.p.65°.By nitrating the latter with amixture of HNO_3 and H_2SO_4,there was formed 3-(o-amino-p-nitrophenyl)-propyl hydrogen sul-phate (Ⅷ),m.p.203°(decomp.); which on subsequent hydrolysis with dilute mineral acidgave the desired product 3-(o-amino-p-nitrophenyl)-propanol (Ⅸ),m.p.90°.In order toestablish the orientation of the nitro group,this compound was converted into its N,O-diacetylderivative (Ⅹ),m.p.128°,which on oxidation with potassium permanganate gave the knowno-acetamino-p-nitrobenzoic acid (Ⅺ).Finally,the compounds Ⅱ,m.p.132°,and Ⅱa,m.p.118°,were obtained by chloroacetylation with an appropriate acid chloride.Direct hydrogenation of o-nitrocinnamaldehyde (Ⅻ) in the presence of Raney-nickel catalystgave rise to 1,2,3,4-tetrahydroquinoline (ⅩⅢ).

本文报告合成氯霉素相似化合物3-[隣二氯(或一氯)乙醯氨基-对硝基苯基]-丙醇。此等化合物对大肠杆菌,伤寒杆菌,副伤寒甲及乙杆菌,金色葡萄球菌及枯草杆菌等细菌均不现抑制作用。说明氯霉素分子上的二氯乙醯氨基从脂肪炼上移至芳香环的相邻位置上,以及仲醇羟基以氢代替后则原有的抗生作用即消失。

2-Bromo-2, 3-dimethylbutane decomposes when treated with phenylmagnesium bromide and cobaltous bromide to give 2, 3-dimethylbutane (35%), 2, 3-dimethylbutene-1 (31%) and 2, 3-dimethylbutene-2 (ca. 2%).1-Chloro-1-methylcyclohexane decomposes when treated with methylmagnesium bromide or isopropylmagnesium bromide and cobaltous bromide to give mainly a mixture of methylcyclohexane, 1-methylcyclohexene and methylenecyclohexane. A small amount of a high-boiling product, probably a dimer, was also obtained. In the...

2-Bromo-2, 3-dimethylbutane decomposes when treated with phenylmagnesium bromide and cobaltous bromide to give 2, 3-dimethylbutane (35%), 2, 3-dimethylbutene-1 (31%) and 2, 3-dimethylbutene-2 (ca. 2%).1-Chloro-1-methylcyclohexane decomposes when treated with methylmagnesium bromide or isopropylmagnesium bromide and cobaltous bromide to give mainly a mixture of methylcyclohexane, 1-methylcyclohexene and methylenecyclohexane. A small amount of a high-boiling product, probably a dimer, was also obtained. In the unsaturated monomeric fraction considerable amount of methylenecyclohexane was found.Upon treatment with base 2-bromo-2, 3-dimethylbutane yields an olefinic mixture, which consists of 79% of 2, 3-dimethylbutene-2 and 21% of 2, 3-dimethylbutene-1, and 1-chloro-1-methylcyclohexane yields only 1-methylcyclohexene.It is suggested that the disproportionation of alkyl radicals in solution is probably a bimolecular reaction and the number of α-hydrogen atoms has a directive influence upon the orientation of olefin formation.

由2-溴代-2,3-二甲基丁烷与溴化苯基鎂在二溴化鈷存在時所起的反應得到如下產物:2,3-二甲基丁烷(35%),2,3-二甲基丁烯-1(31%)及2,3-二甲基丁烯-2(約2%)。由1-氯代-1-甲基環己烷同溴化甲基鎂或溴化異丙基鎂在二溴化鈷存在時的反應得到甲基環己烷,1-甲基環己烯及次甲基環己烷的混合物。此外,還得到少量的高沸點產物,大概为一雙聚合物。在不飽和的單體中,有相當一部分为次甲基環己烷。用鹼處理2-溴代-2,3-二甲基丁烷所得到的烯烴中合有79%的2,3-二甲基丁烯-2和21%的2,3-二甲基丁烯-1。1-氯代-1-甲基環己烷與鹼起消除作用時則只生成1-甲基環己烯。自由烷基在液相中的歧化作用可能为一雙分子反應,烷基分子中的α-碳原子土所具有的氫原子的數目對於烧烴形成的定向表現一定的影響。

 
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