The measurement of ultrahigh frequency is one of the difficulties in frequency measurement.
特高频率的测量是频率测量中的难点之一。
An electron tube used to amplify or generate ultrahigh frequency by means of velocity modulation.
速调管一种用速度调节的方法放大或产生超高频率的电子管。
A method for measuring the phase characteristics of ultrahigh frequency modulating light by optical phase shift is proposed.
提出采用光学移相办法测量超高频调制光相位特性的一种方法。
A method for measuring the phase characteristics of ultrahigh frequency modulating light by optical phase shift is proposed. It has the properties of high precision and strong practicability.
提出采用光学移相办法测量超高频调制光相位特性的一种方法。它具有精度高、实用性强等特点。
This article elaborates on the work principle of the three winding and brushless PMDC, developing speed controller with AT89C2051 at ultrahigh frequency, its electric circuit principles and software…
本文介绍三绕组无刷永磁直流电机的工作原理，超频使用AT89C2051研制速度控制器，其电原理及软硬件设计、并给予讨论。
Furthermore, by using the principle of ultrahigh resolution frequency measurement, the ultrahigh resolution frequency measurement can be achieved with simple circuits.
利用超高分辨率测频原理，以简单廉价的电路完成对频率信号的超高分辨率测量。
Furthermore, by using the principle of ultrahigh resolution frequency measurement, the ultrahigh resolution frequency measurement can be achieved with simple circuits.
利用超高分辨率测频原理，以简单廉价的电路完成对频率信号的超高分辨率测量。
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