This paper is concerned with the basic principle and features of a new-type used sand reclaiming outfit with spiral vibration.
阐述了新型螺旋振动旧砂再生成套装置的基本原理和特点,介绍了成套装置的组成、生产使用情况和良好的效果。
Research on Chinese and foreign studentss' uniform by comparison;
中外学生装发展比较研究