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     Study on the MIS System for Commerce (一)——The Master Design Plan for Chongbai's Manage Information System
     商业MIS系统研究(一)——重百管理信息系统总体设计方案
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     Experimental research on combusting mixture of light fraction diesel fuel and heavy fraction diesel fuel for S195 diesel engine
     S195柴油机燃用轻—重馏分混合柴油的试验研究
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     In this paper,We prove that every open k—multipl(k—to—one) mapfrom T_2 space X onto space Y is a Locally homeomorphic map and give acounterexample to show that the condition T_2 cannot be substituted by T_1.Thus we correct the error of Gittings′ theorem on the inverse image ofM_i—space(i=1,2,3).
     本文证明了:“每一定义在 T_2空间上的 k—重的开映射是局部同胚射”,并以反例指出,如果把条件“T_2”改弱为“T_1”则结论不再成立。 从而纠正了 Gittings 关于 M_i—空间(i=1,2,3)逆象定理的错误。
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     During the years of 1997~2005,the ice area underwent a course from light ice year(1997) to heavy ice year(2000~2001) and then regressed light ice years(2002~2005).
     在1997~2005年间,楚科奇海海冰面积经历了轻(1997年)—重(2000~2001年)—轻(2002~2005年)的变化过程.
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     One type of polymer-supported oxidizing reagent: dichromic acid form 201×2 resin has been sythesized by using 201×2 resin as the Supporter.
     以201×2树脂为载体合成了一种高分子载体氧化剂——重铬酸型201×2树脂。
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     CHAPTER 5 MARINE SEDIMENTATION Section 4 Heavy Mineral
     矿物
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     fresh weight in average.
     鲜
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  - bicarbonate
The extractable P pools by resin and sodium-bicarbonate decreased when soil organic carbon content was reduced.
      
Composition and catalase-like activity of Mn(II)-bicarbonate complexes
      
This is probably due to the stable Fe(II)-oxalate forming in the course of the Tamm extraction, which is incompletely dissolved by the dithionite-citrate-bicarbonate (DCB).
      
Toluene solutions were directly oxidized by combustion in a bomb containing sodium carbonate-bicarbonate buffer, which trapped sulphur species generated from So as sulphate ions.
      
Capsules were found to be stable in water for long periods of time, but they dissolved in both phosphate and carbonate-bicarbonate buffers.
      
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The potential between two nucleons suggested by K. C. Wang, viz.

本篇应用王淦昌所建议之两个核子间之相互位能 即 V=V(r)=- Ae~(klr) 在r≥α时; 及V=V(α) 在r<α时。以求下列数点:(1)子在正常情形时之波函数,(2)中子与质子间之扩散断面值,及(3)子被γ射线击破之断面值。本篇所计算得之各断面值之结果与实验所得者,颇相近似。

The problem of large deflection of a clamped circular plate under uniform pressure is studied by the method of successive approximation in terms of the parameter representing the ratio of the center deflection to the thickness. The tedious numerical computations, involved in Way's power series solution are thus avoided. The yielding condition at the edge checks very well with the experimental results given by McPherson, Ramberg and Levy. The method may be easily extended to any other boundary conditions and...

The problem of large deflection of a clamped circular plate under uniform pressure is studied by the method of successive approximation in terms of the parameter representing the ratio of the center deflection to the thickness. The tedious numerical computations, involved in Way's power series solution are thus avoided. The yielding condition at the edge checks very well with the experimental results given by McPherson, Ramberg and Levy. The method may be easily extended to any other boundary conditions and loading details.

本文所研究者,为一周缘夹紧之圆板,在匀布之侧向压下所生之巨大挠曲。本文用圆板中点之挠曲距离与板厚之比率为参数,逐步求得本题之近似解答,藉此避免前人Way氏之幂级数法中繁之数字计算。圆板周缘呈现委屈现象之条件,亦可求得,其结果与McPherson,Ramberg及Levy诸氏之实验,完全吻合。本法亦可适用于一圆板在其它周缘条件及其它荷情况下之诸问题。

p-Nitro-acetophenone was prepared by diazotizing p-amino-acetophenone in fluoroboric acid solution and replacing the diazonium fluoroborate group by the nitro group in presence of finely divided copper as catalyst. Yield 55-60%; m.p. 76-78℃. Recrystallization from alcohol gave a product of m.p. 80℃.

從乙醯苯胺、醋酸酐與氯化鋅作用,經水解後製得對胺基苯乙酮。在氟硼酸水溶液中氮化之,再在亞硝酸鈉的水溶液中以銅粉為觸媒,將此氮團置換成爲硝基,即得對硝基苯乙酮。

 
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