对塑料挤出机几种换网器的工作原理与结构特点进行了分析比较，并指出了换网关键技术及其发展趋向。
Working principle and structure characteristics of several kinds of screen changer are analyzed and compared. The key technologies and development trends of screen changing are described.
本文对挤出机换网器进行了分类，对典型结构及应用进行了较详尽的阐述，同时对国内换网器的开发工作提出了建议。
In this article the classification, structures and applications of screen changers were described in detail. Some Suggestions on the domestic development of screen changers were also made.
本文对挤出机换网器进行了分类，对典型结构及应用进行了较详尽的阐述，同时对国内换网器的开发工作提出了建议。
In this article the classification, structures and applications of screen changers were described in detail. Some Suggestions on the domestic development of screen changers were also made.
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