利用放射性同位素作为检测手段是一项新的测试技术,这种方法的优点可以对被测物进行无接触甚至是隔离地测量,因而它能测量其它方法不能胜任的对象。工程机械研制过程中,需要研究活塞在气缸中运行规律,确定活塞的位移,用常规的差动变压器或其它位移传感器,则需要打开机壳或用连杆将被测件的运动引出气缸之外进行测量,这就使被测件本身的 The use of radioisotopes as a test method is a new test technique that has the advantage of making contactless and even isolated measurements of the analyte so that it can measure objects that other methods do not. During the development of construction machinery, it is necessary to study the operation rule of the piston in the cylinder and determine the displacement of the piston. With a conventional differential transformer or other displacement sensor, the casing needs to be opened or the connecting rod is used to lead the movement of the measured object out of the cylinder Make the measurement, which makes the device under test itself