1) cyclic spectral

周期谱检测
2) Asynchronous periodic spectrum sensing

异步周期频谱检测
3) detecting period

检测周期
1.
In our country, with the velocity and axis load increase, making the rail failure and fatigue deteriorate accordingly, so the detecting period diminishment is on trend.
在我国,随着列车速度提高和轴重的增加,钢轨伤损发展速度也相应加快,致使检测周期亦有缩短的趋势,开展钢轨探伤,是保证铁路畅通运行的重要措施。
4) testing period

检测周期
1.
Testing period optimal model about storage reliability of equipment;

基于可靠度确定长贮装备最优检测周期的模型
2.
Objective To explore the testing period for orally-used thermometer.