作者: Wei Yuan

This book will summarize research work carried out so far on dissimilar metallic material welding using friction stir welding (FSW). Joining of dissimilar alloys and materials are needed in many …

Laozi Original Meaning includes contents of Laozi, Laozi biography in the Historical Records, Laozi Original Meaning and Records …

Taking the development of the financial industry as the core, this book analyzes the laws of prosperity and decline in the process of world civilization one by one. From shells to coins, from …