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一、 Put the following words into English （30） 1、氨基甲酸酯 ______

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3、Put the correct words into the blanks in the following passages （直接作答，不要手写拍照） An elastomer (or rubber) a polymer having relatively weak interchain forces and high molecular weights. When the molecular chains are ‘straightened out’ or stretched by a process of , they do not have sufficient attraction for each other to the oriented state and will retract once the force is released. This is the basis of .However, if the are very great, a polymer will make a good fiber. Therefore, when the polymer is highly stretched, the chain will come under the influence of the powerful attractive forces and will “crystallize” permanently in a more or less oriented matrix. These will then act virtually as crosslinks, in a material of high tensile strength and high initial modulus, i.e., a fiber. , a potential fiber polymer will not become a fiber unless subjected to a 'drawing' process, i.e., a process resulting in a high degree of orientation.

一、Put the following words into English（直接作答，不要手写拍照上传）1、大分子（n.） 2、多官能度的（a.） 3、溶解（n.） 4、不饱和的（a.） 5、多分散性（n.） 6、聚对苯二甲酸乙二醇酯 7、（链）引发（n.） 8、逐步聚合 9、聚酰胺 10、玻璃化转变温度 11、数均分子量 12、抗张强度 13、立构规整性 14、导电材料 15、本体聚合 __

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