A wavefront at high radio frequencies or optical frequencies impinging on the atmosphere is distorted.

Resonant frequencies are related to the shape and size dimensions of the element.

共振频率与这种元件的形状和大小有关.

For an initial service, a 10 megahertz-wide band of frequencies will be needed.

初始服务需要10兆赫宽的频带。

The deformation frequencies are not sufficiently distinctive.

其变形频率不是十分明显的.

Add the frequencies in each class to find the class that contains that centermost element.

把每一组的频率逐组相加,找出包含中位数的那一组.

If the frequencies are low, this approach cannot be used.

若频率很低时, 这种方法就不能使用.

Confined waves have definite frequencies.

被限制的波具有确定的频率.

The frequencies of the returned beams are compared with them to obtain the true ground speed.

将它们与反回射束作对比而获得真实的地面速度.

The high frequencies are attenuated.

高频成分被削减.

At low frequencies, such as 10 per sec., pulsation is sensed rather than vibration.

在低频率(譬如每秒十次)时, 所感觉到的是脉冲而非振动.

The drug can reduce the frequency and severity of attacks.

这种药能降低发病次数和严重程度.

The real part of the impedance R is a of frequency.

该阻抗的实部R是频率的函数.

Their instruments detected very faint radiowaves at a frequency of 3 kilohertz.

他们的仪器检测到一个3千赫的微弱无线电波。

Accidents are happening with increasing frequency.

事故发生得越来越频繁.

Fatal road accidents have decreased in frequency over recent years.

近年来致命交通事故发生率已经下降。

Are filters managed properly? Clean frequency, renew frequency?

过滤器管控是否恰当? 清洁频率, 更新频率是 多少 ?

The results revealed mild lowering contrast sensitivity at high spatial frequency for our glaucoma patients.

然而特定轴度之闪光眩耀测试结果并未见明显差别.

For lossless digitization, the sampling rate should be at least twice the maximum frequency response.

我们要获得一个无损的采样, 就必须以波形最高允许频率的两倍作为采样率.

If we can know their frequency we will monitor their talking.

如果我们知道他们的频率,我们就能监听他们的谈话.

Motion sensed by the body mainly in the 0.5 HZ ~50 HZ frequency range.

身体所能感知运动的频率范围通常在0.5赫兹到50赫兹之间.

Transistor high frequency generator, fast heating speed, high efficiency, low power consumption.

晶体管式高频发生器, 加热速度快, 效率高, 耗电少.