2) high frequency vibrator
高频率震动器
3) Frequency of base isolation
隔震频率
4) frequency oscillation
频率震荡
1.
The structure of Changdu power grid and the process of frequency oscillation accident are summed up,it is analyzed theoretically that the reason of the system oscillation is the ferromagnetic saturation of TV,low-frequency load reduction scheme for Changdu power grid is also analyzed,and the method against misoperation of low-frequency load reduction is put forward.
全文综述了昌都电网结构及电网频率震荡事故的过程,从理论上分析了中性点不接地的配电网中常会发生电压互感器(TV)饱和引起的铁磁谐振可能引起系统频率的震荡,并分析了昌都电网低周减载方案,提出了防止低周减载误动的方法。
5) earthquake frequency
地震频率
1.
Based on the data in seismic catalog , the characteristic of unequal time periods in different areas is considered in the spatialization of earthquake frequency.
从地震频率分布结果上看,大致以宁夏、甘肃、四川和云南为界,中国西部地区3级以上的地震发生频率要高于东部地区;从地震烈度分布结果看,中国甘肃、陕西、宁夏、山西、河北、四川、云南等位于地震带内的区域在发生地震时产生的烈度较高。
6) blasting frequency
主震频率
补充资料：频率计量(见时间频率计量)
频率计量(见时间频率计量)
frequency metrology: see time and frequency metrology
口n IQ liliang顷率频率计皿(f比quency metrolo盯) 计t。见时闰
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条