论文部分内容阅读
虽然孔径测量已有许多方法和仪器,但研制精密而操作十分简便的仪器仍是一个待解决的任务。采用绝对光波干涉法测量孔径是最有希望的,这种方法已在量块的测量中应用,并有充分的实践证明很好用。大家知道,最高精度量块的测量基本上都在柯氏干涉仪上进行的。 (下略)
Although many methods and instrumentation are available for aperture measurement, the development of sophisticated and easy-to-use instruments remains a task to be solved. It is the most promising method to measure the aperture by absolute lightwave interferometry. This method has been applied to the measurement of mass and has been proved to be very good by practice. We all know that the most accurate measurement of the mass block are basically conducted on the Kirschner interferometer. (Slightly below)