前言世界各国的试验机技术,都是随着本国的冶金、机械、航空和国防工业的发展而逐渐发展起来的。从第二次世界大战后的情况来看,由于航空工业飞速发展,促使新型合金的发展。从而,各国先后研制成一系列新型试验机。如高低温试验机、高速试验机和高频疲劳试验机都是在那时候发展起来的。到了50年代初由于电子技术的发展,使得大多数材料试验机的控制、测量和记录系 Foreword Test machine technology in all countries of the world is gradually developed with the development of its own metallurgy, machinery, aviation and defense industries. From the situation after the Second World War, due to the rapid development of the aviation industry, prompting the development of new alloys. Thus, various countries have developed a series of new testing machine. Such as high and low temperature testing machine, high-speed testing machine and high-frequency fatigue testing machine were developed at that time. By the early 1950s the development of electronic technology led to the control, measurement and recording of most material testing machines