1)piezoelectric crystal detector压电频移法
英文短句/例句
1.Microdetermination of Chromium(Ⅵ) in Natural Water with a Piezoelectric Crystal Detector压电频移法测定天然水样中微量铬(Ⅵ)
2.Frequency drifts due to: DC voltage, temperature, VSWR.频率漂移跟直流电压、度、波比有关。
3.Research on a Frequency Conversion Measuring Apparatus for Power Frequency Parameters of Transmission Line;高压输电线路工频参数移频测量装置的研制
4.A Phase Shift Full-bridge Zero-Voltage Switching Converter Based on Isolated Transformers基于隔离变压器的移相全桥零电压开关变频器
5.Determination of electric strength at power frequence for capacitor paperGB/T12656-1990电容器纸工频击穿电压测定法
6.Method of test for breakdown voltage of cable paper at power frequenceGB/T3333-1982电缆纸工频击穿电压试验方法
7.Design of Phase-shifted Full-bridge Soft-switching High-frequency&voltage Alternating Current Power Supply.;移相全桥软开关高频高压交流电源的设计
8.Control Methods for Voltage and Frequency of UHV Frequency-tuned Resonant Test Power Supply调频式谐振特高压试验电源电压及频率的控制方法
9.The Calculation Method for High-Frequency Parameters of EHV/UHV Transmission Lines超、特高压输电线路高频参数计算方法
10.Time-domain Calculation of Transformer Windings Overvoltage under VFTO Considering Frequency-dependent Parameters;陡波前过电压下频变变压器绕组过电压时域算法研究
11.Research on UHF Method for PD Detection in Power Transformer;电力变压器局部放电超高频检测方法的研究
12.Study on Ultra-High-Frequency Method for Monitoring Partial Discharge in Power Transformers;电力变压器局部放电超高频在线监测方法研究
13.An Analysis on the Dynamic Solution of the Series of Capacitor′s Voltages by Means of Complex Freguency Field Analysis Method;复频域分析法分析串联电容电压的暂态解
14.The Research on the Modeling Method of High Frequency Passive Circuit Model for the Potential Transformer电压互感器高频无源电路模型建立方法研究
15.Research on Suppression of Power Frequency Electric Field Due to EHV Transmission Lines超高压输电线路下工频电场抑制方法的研究
16.Measuring method of radio-frequency high potential withstanding voltage for radio-frequency coaxial connectorsGB/T12272-1990射频同轴连接器耐射频高电位电压测试方法
17.Methods of measurement for radio transmitters employing F3E emission used in the mobile servicesGB/T12192-1990移动通信调频无线电话发射机测量方法
18.Methods of measurement for radio receivers employing F3E emission used in the mobile servicesGB/T12193-1990移动通信调频无线电话接收机测量方法
相关短句/例句
Voltage of FSK signal移频信号电压
3)High Frequency Voltage Source Method高频电压法
4)frequency transposition compression移频压缩
5)the method of shift frequency移频法
6)HT frequency-shift method频移法
延伸阅读
多普勒频移多普勒频移 物理学术语。又称“多普勒频率”。由多普勒效应引起发射频率与运动目标反射波或散射波信号频率之间的频差。反射体引起的多普勒频移(fd)与发射频率(fs)的关系式为fd=(2Vcosθ)·fs，C为声速，V为反射体的运动速度，θ为反射体运动方向与声束指向之间的夹角。取超声诊断中的典型数据可算得血流。胎心检测中的多普勒频移(fd)均在声频范围之内，因此这类诊断仪器均可采用扬声器来监听。
