extremely high frequency

Extremely low dissipation factor, high stability. Used in TV gathering focus, oscillation frequency and timer circuits.

低损耗角正切, 高稳定的性能. 适用于电视聚焦, 振荡,定时回路.

Ultrasonic devices use sound waves of extremely high frequency.

超音波装置使用极高频率的声波.

When the geosound is propagating in the stratum, the low frequency part of it propagates far in the solid dielectric, while the high frequency part is attenuated so fatly that the signal strength the detector detected is small and extremely weak.

地声在地层中传播时，低频率部分在固体介质中传播较远，而高频部分的衰耗很大，而且探测器接受到的信号强度很小，极其的微弱。

With the switch frequency IGBT switching device input impedance high, high, high temperature extremes, driving circuit is simple, driving power small, components such as small loss more than the advantages, is extremely ideal switch components.

IGBT开关器件具有开关频率高、输入阻抗高、极限温度高、驱动电路简单、驱动功率小、元件损耗小等多个优点，是极为理想的开关元件。

In high frequency communication, extremely low SNR communication is an expedient means.

在短波通信中, 极低信噪比条件通信是一种应急通信手段.