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a结构
    The M·S analysis to the BJⅡa structure of Boschniakia rossica polysaccharide
    草苁蓉多糖BJⅡa结构的质谱分析
    The tensile strength, elastic module as well as elongation at break of PU network can be improved appreciably by introducing 5-10 phr polyol with bisphenol A structure into PU networks.
    在聚氧化丙烯聚醚多元醇中添加 5 - 10 phr双酚A结构的多元醇就能显著地提高聚氨酯网络的拉伸强度、弹性模量和断裂伸长率
    The azo compound of 2 Hydroxy 5 (4 sulfo phenylazo) benzoic acid ethyl ester which has D π A structure was designed and synthesized.
    设计合成了具有D π A结构的偶氮化合物 2 羟基 5 (4 磺酸基偶氮苯 ) 苯甲酸乙脂
    A new compound with D-πA structure was synthesized from 4-methylpyridine and 4-imidazolylbenzaldehyde which was obtained by the reaction of imidazole with 4-fluorobenzaldehyde. The structure was characterized by UV,~1H NMR,IR,MS and elemental analysis.
    以咪唑和对氟苯甲醛为原料,合成了咪唑苯甲醛; 咪唑苯甲醛与4-甲基吡啶反应得到一种新型的含D-π-A结构的化合物,其结构经UV,1H NMR,IR,MS和元素分析确证。
    Has constructed S/A structure method and the trans-departmental flow government, proposed the government's BPR firstly needs to carry on the strategic plan, under the strategic plan foundation, carries on the flow design information the collection reorganization, finally carries on the government service flow diagnosis and the redesign;
    构建了跨部门流程型政府和政府业务流程再造的S/A结构方法,提出政府流程再造首先需要进行战略规划,在战略规划的基础上,进行流程设计信息的收集整理,最终进行政府业务流程诊断及重新设计;
    Two kinds of excitation tests are carried out on either cf the two machines and the close values of modal parameters are given by the HP5423A Structure Dynamics Analyzer, The transfer function of relative excitation developed in this paper is examined by synthesizing the modal parameters.
    每台滚齿机床都进行两种激振试验,并用HP5423A结构动态分析仪得到差别很小的模态参数。 综合这些模态参数验证了所提出的相对激振传递函数。
    The necessary and sufficent conditions for the existence of interface spin waves (ISW) of the coupled three ferromagnetic chains with A B A structure are obtained exactly and analytically for the ferro/antiferromagnetic interface couplings. Effects of the external field on the existence conditions of ISW are discussed in detail.
    研究磁场中具有单轴各向异性的A-B-A结构自旋链中的界面自旋波及其存在条件.详细讨论了外场等物理因素对存在条件的影响.
    The exact solutions of interface state eigen problems of lattice vibrations in a monoatomic chain of symmetry A—B—A structure are investigated by use of the interface rescaling approach. The necessary and sufficient condition for the existence of such interface statesis is obtained exactly and analytically.
    采用界面重标度方法,严格求解对称A—B—A结构的原子晶格链中晶格振动的界面态的本征值问题,获得了界面态存在的充分必要条件的精确解析式。
    N -(4 - hydroxyphenyl)maleimide has been synthsized and used as a starting reactant to synthesized a new bismaleimide containing silicon oxygen bond and bisphenol A structure. This new kind of bismaleimide has remarkable melting point and may be used as a thermal melting resin. This bismaleimide was characterized by element analysis,H - NMR, and thermal analysis.
    合成了N—(4—羟基苯基)马来酰亚胺,并以此为起始物合成了含有硅氧键及双酚A结构的双马来酰亚胺(C_(39)H_(38)N_2O_8Si_2).这种新型双马来酰亚胺具有明显的熔点,可以作为热熔型树脂.并采用元素分析、~1H—NMR及热分析方法对其进行了表征.
    A kind of polyol with bisphenol A structure was synthesized and characterized. The polyurethane (PU) networks with bisphenol A segments were prepared through adding this polyol with bisphenol A structure into poly(oxypropylene) polyol.
    首先合成与表征了一种含有双酚A结构的多元醇 ,通过添加这种多元醇至聚氧化丙烯聚醚多元醇中合成了含有双酚A链段的聚氨酯网络。
    The results showed that nonmetallic inclusions in weld seam served as crack initiation site under external bend load, and large amount of M A structure resulted in cleavage fracture of weld seam.
    结果表明 ,焊缝金属中存在的非金属夹杂物 ,在低应力作用下形成微裂纹成为裂源 ,加之焊缝组织中存在大量的M A结构群 ,从而发生焊缝金属在室温下的解理断裂。
 

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