查询词典 radio

The first successful radio range-finding experiment occurred in 1924, when the British physicist Sir Edward Victor Appleton used radio echoes to determine the height of the ionosphere, an ionized layer of the upper atmosphere that reflects longer radio waves.

首次成功的无线电范围内调查试验发生在1924年，当英国物理学家尤德爵士维克多阿普尔顿使用的无线电回波，以确定高度，电离层，电离层的上层大气，反映了较长的无线电波。

The key problems of software radio and direct sequence spread spectrum range used in high range radio fuze are discussed. The effects of doppler frequency and carrier's initial random phase are analyzed. A new direct sequence spread spectrum algorithm based on software radio is proposed, by using differential encoding and quadrature demodulating, the effects of doppler frequency and carrier's initial phase on the output of inference filter are eliminated successfully.

研究了软件无线电和直接扩频测距技术在大炸高无线电引信应用中的关键技术问题，分析了由于多普勒效应引起的载波频偏以及载波随机相位对测距的影响，提出了一种基于软件无线电的直接序列扩频解调算法，通过采用差分编码和正交解调的方法，消除了多普勒频偏和载波随机相位对测距的影响。

Later, he competed in a spelling competition that was broadcast on radio. The radio announcer told Willis that he should work in radio.

后来，他参加了一次听广播拼写比赛，这家广播电台的主持人对威利斯说，他应该到广播电台工作。

Radio spectrometer is important method and main instrument of radio astronomy research, through which we can research radio astronomy phenomenon in wide frequency spectrum and continuous time with high frequency resolution and high temporal resolution.

射电频谱仪是通过高的频率分辨率和高的时间分辨率，在广泛的频谱范围内和连续的时间演化上进行射电天文观测的仪器，它是射电天文研究的重要方法和主要工具。

It launched on shore more than two omnidirectional radio beacon stations or radio stations to wave direction , to determine the ship's position can also be used to determine the objective of launching radio waves ...

它以岸上两个以上全方向发射的无线电指向标台或无线广播电台的来波方向，来决定船位，也可用于测定发射无线电波的目标所在。。。

For navigation of ships and aircraft the radio range, radio compass, and radio time signals are widely used.

为船和航空器的航海无线电范围，无线电罗盘，和无线电时间信号广泛被应用。

VHF and HF radio are fitted, together with a radio compass and radio altimeter.

甚高频和高频无线电都装上了无线电罗盘和无线电高度表一起。

For the first time, we study the radio afterglow behavior during the trans-relativistic phase of the fireball shock wave. Considering the trans-relativistic shock dynamic and the synchrotron self-absorption effect of the relativistic electrons on the radio emission, we find that the dense medium model can not only explain the fast decline of the X-ray and optical afterglows of GRB980519, but also account for its radio afterglow quite well.

我们首次研究了致密介质情形下射电余辉在跨相对论阶段的行为，发现考虑到激波的跨相对论动力学和相对论电子的同步自吸收效应对射电辐射的影响，致密介质模型既可以解释GRB980519的快速衰减的X射线和光学余辉，也可以很好地解释其射电余辉的特点。

It is called a radio telescope because a radio antenna is used to observe radio waves emitted by astronomical sources.

它被称为射电望远镜，因为收音机的天线是用来观察天文活动所排放的无线电波。

Sardar: Radio label shows Made in Japan but radio says this is 'All India Radio!

收音机上的标签说是日本生产的，但收音机里说的却是这是' 印度广播电台

Dixie itself is a nickname for the American South.

Dixie 本身是美国南部的别称。

I think John Terry epitomises that and a big reaction is what we will be looking for.

而我认为特里就是这样一个典型，他正是我们期望看到的那个领秀。