Miniature passive hydrogen maser is developed at Shanghai Observatory cavity design and square wave frequency modulation.

Simulation results show that it can efficiently test frequency-modulation linearity.

仿真结果表明,该方法能有效地检测 LFMCW 雷达的调制线性度.

FM launcher can change navigating audio signal into frequency modulation signal, and playing.

FM发射器可将导航音频信号转换为调频信号播放.

Alarm function: can any one song or MP 3 FM frequency modulation for the alarm clock.

闹钟功能: 可以把MP3任何一首歌或FM频率调为闹钟.

When the intensity modulation index increases, the optimal frequency modulation index increases.

随着强度调制系数增大, 频率调制系数的最优值也增大.

Linear frequency modulation ( LFM ) interferences may be a kind of preferred wideband interferences in spread-spectrum.

线性调频 ( LFM ) 是扩频系统中常见的一种宽带干扰样式.

Reduction of Conducted EMI in switching power supplies using chaotic frequency modulation scheme ( CFMS ) is proposed.

利用混沌频率 调制技术 从噪声产生源头上降低了开关电源传导电磁干扰.

A method of representing data in magnetizable surface storage; for example, " modified frequency modulation ".

在磁表面存储技术中一种表示数据的方法, 例如 改进型 调频制.

The loss of relatives is among the most frequent trials in life.

失去亲人是人生最常遇到的痛事之一.

It is not polite to interrupt a speaker with frequent questions.

不断提问打断演讲者是不礼貌的.

He had frequent attacks of malaria.

他常患疟疾.

His rude behaviour subjects him to frequent rebuffs.

他的粗鲁行为使他经常遭受冷遇.

He is a frequent visitor to this country.

他常常访问这个国家。

Rains are frequent here in spring.

这儿春季雨很频.

Traffic accidents are alarmingly frequent of late.

近来交通事故频繁得吓人.

There was frequent thunder and lightning, and torrential rain.

雷电交加，大雨倾盆。

Their frequent invitation places us under an obligation to invite them to our house for a change.

他们经常邀请我们,我们只好礼尚往来邀请他们到我们家.

All weaponry demands frequent servicing.

所有武器都需要经常检修.

Research is also advanced by frequent conference to exchange experience.

经常开会交流经验也促进了研究工作的发展.

He never thought to disguise from her a knowledge of the haunts which he frequented.

他从不想向她隐瞒什么,凡是他出入的地方,他都照实告诉她.

He frequented this restaurant and gave outrageous tips to the waiters.

他经常去这家饭馆,并给服务员数目可观的小费.