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the orientation
相关语句
  取向
    During melt molding process,the orientation of GF in the composites is influenced by shear rate,and the mechanical properties of the GF/PET compos- ites are optimized at a proper shear rate.
    在熔融成型GF/PET复合材料试样过程中,剪切速率影响GF在复合材料中取向,试样力学强度对应有最佳的熔体流动场剪切速率。
短句来源
    CHARACTERIZATION OF THE ORIENTATION STRUCTURE AND DISTRIBUTION IN ROLLED POLYPROPYLENE
    轧制聚丙烯取向结构及分布的表征
短句来源
    INFRARED DICHROISM STUDIES ON THE ORIENTATION BEHAVIOR OF POLYURETHANE FILM
    红外二向色性法研究聚氨酯薄膜的取向行为
短句来源
    Study on The Orientation of AIDF in LB Films
    9-烷基亚胺-4,5-二氮杂芴LB膜内分子取向的研究
短句来源
    Advances in the Methods of Characterizing the Orientation of Polymer Molecule on its Surface
    聚合物薄膜表面分子取向的表征方法
短句来源
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  丝取向
    Study on the Orientation Structure and Thoeretical Model of Pan Precursor and Preoxidized Fiber
    聚丙烯腈基碳纤维原丝、预氧丝取向结构及理论模型研究
短句来源
    The study on the orientation structure and the mechanical properties of the preoxidized PAN-based carbon fiber
    聚丙烯睛基炭纤维预氧丝取向结构与力学性能研究
    The orientation factor of PAN precursor drawn at different ratios coincided with the theoretical curves of Crawford and Kolsky orientation model.
    不同拉伸比的PAN原丝取向系数与Crawford和Kolsky取向模型的理论曲线比较吻合。
短句来源
    were kept constant. The results indicated that as the draw ratio increased, both themechanical properties and the orientation degree of PAN precursor has been improved.
    研究结果表明:纺丝成型过程中,随着牵伸倍率的增大PAN原丝的取向程度有明显提高,其力学性能得到明显改善,但是当牵伸倍率大于8时,原丝取向度的增加变缓,确定拉伸比在6~8范围内较佳。
短句来源
  “the orientation”译为未确定词的双语例句
    Utilizing I_p as the Orientation Criterion of N_2O_4-O_3 Nitration Substituted Benzene
    用I_p作为N_2O_4-O_3硝化取代芳烃的定位判据
短句来源
    The orientation Law of mono-Substitution radical is decided by the quality of conjugate effect (+C or -C) of substitution radical “Y” ,but the induced effect (+I or -I) of substitution radical “Y” only impair the substituted reaction speed “H” on benzene hoop.
    一元取代苯取代基的定位规则是由取代基Y的共轭效应(+C或-C)性质所决定,而取代基Y的诱导效应(+I或-I)只影响苯环上H的被取代反应速度
短句来源
    THE COMPARISON BETWEEN EXPLAINNING METHODS OF THE ORIENTATION EFFECTS OF EXISTING A SUBSTITUENT ON BENZENE ELECTROPHILIC SUBSTITUTION
    一取代苯的亲电取代定位效应解释方法比较
短句来源
    A NEW METHOD FOR CALCULATING ATOMIC CHARGES IN MOLECULES AND QUANTITATIVE TREATMENT OF THE ORIENTATION EFFECT OF ELECTROPHILIC AROMATIC SUBSTITUTION REACTION
    计算分子中原子净电荷的新方法及芳烃亲电取代反应定位效应的定量处理
短句来源
    APPLYING OF NMR HYDROGEN CHART IN THE ORIENTATION EFFECT OF AROMATIC HYDROCARBON CLOSE ELECTRICITY
    核磁共振氢谱在芳烃亲电取代定位效应中的应用
短句来源
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  the orientation
In order to analyze the relationship between two coordinate systems, which is attached respectively to the diving spherical gear and the driven spherical gear, the orientation cosine matrix method is utilized.
      
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.
      
Introduced were the functions of influence of the basic control on the dynamics of the autonomous models of isolated flexible modes that underlie the fuzzy characteristics of the orientation system.
      
For the developing structure, the structural diagrams of the orientation systems realizing the accepted control strategies at the corresponding stages of assembling were presented.
      
The direction of the observed changes in the orientation and exploratory behavior of anosmic animals was different.
      
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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。

The effects of molecular weight, molecular weight distribution and melt-spinning conditions of polypropylene resins on texture formation and non-uniformity of polypropylene fibers were investigated. The as-spun polypropylene fibers produced by melt spinning frequently exhibit diameter fluctuations. Pure rheological studies on this phenomenon were made by many authors, but our experiment showed that the orientation fluctuation and the crystal-linity difference of as-spun fibers make trouble much more severe...

The effects of molecular weight, molecular weight distribution and melt-spinning conditions of polypropylene resins on texture formation and non-uniformity of polypropylene fibers were investigated. The as-spun polypropylene fibers produced by melt spinning frequently exhibit diameter fluctuations. Pure rheological studies on this phenomenon were made by many authors, but our experiment showed that the orientation fluctuation and the crystal-linity difference of as-spun fibers make trouble much more severe than fiber diameter fluctuation does in the polypropylene spinning process. Since the mechanical properties of fibers, such as yield stress and initial modulus, depend on the orientation and crystallinity of as-spun fibers, the stretchability of as-spun fiber becomes worse with increasing orientation fluctuation and cry-stallinity. That means flow-induced crystallization plays a predominant role in fiber uniformity of polypropylene spinning process.

本文研究了聚丙烯树脂、纺丝条件等对聚丙烯纺丝过程中纤维不均匀性的影响。试验证明仅仅从流变学的角度来研究聚丙烯纺丝过程中纤维直径的不均匀性是不够的,因为初生纤维的屈服应力和初始模量的不均匀性主要取决于其取向的不均匀性和结晶性的差别。因而为了改善初生纤维的牵伸性能、提高聚丙烯纤维的质量,应该以控制初生纤维的织构和织构的均匀性为原则来合理选择聚丙烯树脂原料和控制纺丝工艺条件。

At a certain HLB value the surface activity, surface adsorption, wettability, foam, emulsion, solubilization and detergency of the binary or ternary mixed solutions of lauryl polyoxyethylenated alcohols with different normal distribution were studied. By Gibbs equation the amounts of saturated surface adsorption and surface pressure were also measured. Experimental results indicate that γcmc, CMC, ∞~(1/2) of the mixed surfactant solutions are nearly the same as the solution of individual components, correspondingly....

At a certain HLB value the surface activity, surface adsorption, wettability, foam, emulsion, solubilization and detergency of the binary or ternary mixed solutions of lauryl polyoxyethylenated alcohols with different normal distribution were studied. By Gibbs equation the amounts of saturated surface adsorption and surface pressure were also measured. Experimental results indicate that γcmc, CMC, ∞~(1/2) of the mixed surfactant solutions are nearly the same as the solution of individual components, correspondingly. The orientation of surfactant molecules from a mixed sur1actant solution with a suitable combination on the interracial layer and the formation of mixed micelles from the bulk solution would be enhanced. The mixed lauryl polyoxyethylenated alcohols with medium polyoxyethylenated chain length accompanied with a small quantity of long and short polyoxyethylene chain length in which the distribution of components' being in a wide and homogeneous state will give the product a better emulsibility and detergency.

本文研究了在一定HLB条件下,通常分布月桂醇聚氧乙烯醚(3~15)的二元及三元混合物溶液的表面活性和表面吸附;考察了不同组合对混合溶液的润湿、泡沫、乳化、增溶及去污等性能的影响。应用Gibbs方程计算表面活性剂混合溶液表面吸附量。结果表明不同乙氧基数分布的月桂醇聚氧乙烯醚混合溶液的性质同单独成分比较接近,适度混合能提高表面层分子排列的紧密度,促进混合胶束的形成。中等乙氧基链AE再混配以长、短乙氧基链、其组合分布宽而均匀,可获得较好的乳化性与洗涤性。

 
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