The production techniques, characteristics, applications of metallocene polyethylene, and its new development in industrialization are introduced.介绍了茂金属聚乙烯的制造技术 、 特点 、 产品特性和用途, 以及它的开发和工业化的最新进展.The progresses in five - me...
The dust whirled and eddied in the sunlight.灰尘在阳光下旋转翻腾。The waves swirled and eddied around the rocks.波浪翻滚着在岩石周围打旋。The mist eddied round the old house.雾气回旋在这栋老房子的四周....