1) industrial frequency
工业频率，工频
2) mains frequency
电网频率，电源频率，市电频率，工业频率
3) power frequency withstand voltage
工业频率耐压
4) power frequency table
工频频率表
1.
The passage illustrates the uncertainty measurement approaches used by domestic measurement, scientific research and producing departments, and analyzes the uncertainty of calibrating indication errors of power frequency table.
阐述了国内计量、科研、生产等部门所使用的工频频率表的测量不确定度评定方法,并对工频频率表校准示值误差测量不确定度进行了分析。
5) commercial frequency meter
工业用电频率计;市电频率表;工频频率表
6) working frequency
工作频率
1.
The dead oil NMR relaxation times are measured with two working frequency (2 MHz and 23 MHz) NMR spectrometers in this paper.
利用两种工作频率(2MHz和23MHz)的NMR谱分析仪器测量了不同粘度原油样品的NMR弛豫时间。
2.
With the study of the current methods of route multi identify in expressway,the problem of how to choose the working frequency in route identify system with RFID is researched.
结合高速公路多义性路径识别问题研究的实际情况,对采用RFID解决路径识别问题中工作频率的选择进行多方面的分析和探讨,通过分析不同频段的使用情况、现有技术的成熟度、各个频段产品现状及应用成本问题,对每个频段当前的可选择性进行比较分析,可为使用RFID解决路径识别问题中工作频率的选择提供思路。
3.
The results show that noise spectrum of ultrasonic cleaner has a broadband and contains largely high frequency components,and its basic frequency depends on the working frequency of ultrasonic cleaner.
结果表明,超声波清洗机的噪声频带较宽且以高频噪声为主,主频位于工作频率处。
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