To solve the problem of exaggerated angle pulse in the ratio driving and tracing measuring technique in testing in situ for large gears, the programmable dynamic frequency doubler has been developed.
为解决大齿轮在机测量过程中采用比例驱动跟踪测量技术时转角脉冲当量过大的问题，研究开发了可编程动态倍频器。
The second part is discussed mechanical engineering measuring and testing technique , including sensors' characteristic, methods how to select, install and test sensors.
机械工程测试技术，包括传感器性能特点、选用方法、安装以及测试方案等。
The experimental results illustrate that this testing technique is applicable and the measuring apparatus is reliable.
试验结果表明该测试方法是可行的， 测试设备是可靠的。
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