一、引言 近年来,随着科学技术迅速发展,测试用的仪器、设备及其试验方法亦有很大改进,特别是电子计算机的广泛应用,对提高测试精度,模拟实际工况和简化操作程序都提供了有利条件,这就有可能在较短期间内得出准确可靠的试验结果来指导生产,使科研工作走在生产的前面。 I. INTRODUCTION In recent years, along with the rapid development of science and technology, there has also been a great improvement in the testing equipment, apparatus and test methods, especially the extensive application of electronic computers. It is of great importance to improve the testing accuracy, to simulate the actual working conditions and to simplify the operating procedures Have provided favorable conditions, it is possible in a relatively short period of time to obtain accurate and reliable test results to guide the production, so that scientific research walk in front of the production.