1. The liquid metal flow during mould filling in bottom gating system and its influence on the casting quality are introduced
emphatically.
着重介绍了液态金属在底注式浇注系统充填型腔时的流动，以及其对铸件质量的影响。
2. This paper introduces various kinds of flame retardants at abroad
emphatically and analyses the development trend of flame retardants at home.
介绍了国外塑料阻燃剂的品种及其在国内外的发展状况。分析了我国阻燃剂的发展方向。
3. This paper introduced the design of an antistatic fabric as well as its production, and
emphatically analyzed the technique and the key measures to produce the antistatic fabric.
介绍了一种抗静电面料的设计与加工方法，重点对抗静电织物生产中的主要生产技术与关键措施作了分析说明。
