聚乙烯因其良好的绝缘性能和机械性能，广泛应用于电力电缆及电气设备绝缘领域。
Polyethylene has been widely used in power cables and electrical equipments because of its excellent insulating and mechanical properties.
对采用负压定径技术生产大管径聚乙烯管的挤出成型工艺及其主要设备进行了研究。
The extrusion molding process and main equipment for producing PE large diameter pipe with negative pressure sizing technology are studied.
介绍了目前生产高质量聚乙烯粉末涂料的先进工艺，其中包括原材料、设备选择和具体的实施过程及有关注意事项。
The advanced producing process of high-quality polyethylene powder paint included the selection of materials and equipments, concrete operation sequences and points for attention was introduced.
应用推荐