... direct plummet observation || 正锤线观测，正锤法 direct polymerization || 直接聚合 direct pressure closing || 直压法(压铁直接压在砂型上) ...
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This thesis includes two parts. (1)Two methods of direct polymerization of PLA were studied under low vacuum.
本论文的主要内容如下：1．本文采用两种直接聚合的不同工艺：熔融聚合和溶液聚合，研究了在较低真空度下乳酸的聚合反应。
参考来源 - 聚乳酸合成工艺研究·2,447,543篇论文数据，部分数据来源于NoteExpress
The producing methods of HMSPP were discussed, including direct polymerization, radiation grafting and cross-linking, silane grafting and cross-linking, and so on.
文章综述了制备高熔体强度聚丙烯的制备方法，主要有直接聚合法、辐射接枝交联法、硅烷接枝交联法等。
The producing methods of HMSPP were discussed, including direct polymerization, radiation grafting and cross-linking, silane grafting and cross-linking, and so on.
通过反应挤出法对聚丙烯（PP）进行硅烷接枝交联改性获得高熔体强度PP（HMSPP），并对HMSPP的发泡性能及影响因素进行了研究。
The process producing oligomer in the production of nylon 6 and the technical method of using oligomer to produce engineering plastics nylon 6 by direct polymerization have been introduced .
介绍尼龙6生产中低聚物产生的过程，以及利用低聚物直接聚合生产工程塑料用尼龙6的工艺方法。
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