本文主要是以二乙酰氧基硅烷与二元羧酸进行缩聚反应，合成了一系列聚硅基酯。
This paper reports the synthesis of a series of poly (silyl ester)s by diacetoxylsilane with several dicarboxylic acid.
先制备具有均一链长的含有酰胺键的硬段单体，然后与二元醇进行缩聚反应生成酯键是制备性能良好的聚酰胺酯的较好途径。
Ester bond can be formed through the polycondensation of hard segment monomer with uniform segment length containing amide bond and dihydric alcohol, which is a better way to prepare polyesteramide.
由于实测信息的不完备，使得在利用传统的基于模型修正的数学方法进行结构损伤识别时，必须对结构的模型进行缩聚或对实测振型进行扩展。
For the measured information is far from complete, the model condensation or the mode shapes extension techniques have to be used in the traditional model updating method.
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