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作为测定各种材料的拉伸、压缩、和弯曲等试验用的材料试验机,是试验室中最基本和最主要的测定机器。随着国家经济建设的飞耀发展和向科学进军高潮的来临,这类试验机的需要数量将有大量的增加。为了保证试验机的正确安装、合乎它的性能技术要求、并在不返工的情况下顺利完成,则一些有关试验机的特性、原理、及安装技术要求是应予注意的。这种试验机,当用夹具测力计(校对试验机用的测力仪器)校对时,试验机所指出的负荷读数与夹具测力计所指的读数,其误差不应超过1％。如
As a material testing machine for testing various materials such as drawing, compression, and bending, it is the most basic and the most important measuring machine in the laboratory. With the rapid development of national economic construction and the advent of scientific advancement, the number of such testing machines will increase substantially. In order to ensure the correct installation of the testing machine, to meet its performance and technical requirements, and to successfully complete without rework, some characteristics, principles, and installation technical requirements of the testing machine should be noted. This type of testing machine, when calibrated with a jig dynamometer (for dynamometric instruments used in proofreading machines), shall not exceed 1% of the load reading indicated by the testing machine and the reading of the jig dynamometer. Such as