radio beam

美 　英

• na.無(wú)線電射束
• 網(wǎng)絡(luò)無(wú)線電波束；無(wú)線電射線；無(wú)線電導(dǎo)航波柱

英漢解釋

na.	1. 無(wú)線電射束

英英解釋

n.	1. a beam of radio signals transmitted by a radio beacon for navigation purposes

例句

Like the searchlight beam, the radio beam cannot be made very sharp; it tends to spread.

無(wú)線電射束也象探照燈的光束一樣，是不能高度集中的；它總要散開(kāi)。

it is far from simply a radio beam passing through a vacuum at "the speed of light" .

這遠(yuǎn)不像一束無(wú)線電波“以光速”穿過(guò)真空層那樣簡(jiǎn)單。

ironically , the detailed reasons as to how the radio beam is produced may not be important astronomically.

具有諷刺意義的是，產(chǎn)生射電波束的詳細(xì)原因在天文上，這也許并不重要。

Notice that in both these examples the radio beam generated for one cell-phone user does not reach the other.

注意，在上述兩例中，針對(duì)其中一名用戶產(chǎn)生的無(wú)線電波束，并不會(huì)抵達(dá)另一位用戶的所在位置。

And the spacecraft's antenna will receive a powerful radio beam from Earth passing through Pluto's atmosphere.

來(lái)自地球的強(qiáng)大無(wú)線電波能穿透冥王星大氣層，為太空船的天線所接收。

Following a radio beam. Used of aircraft.

跟隨無(wú)線電波。用于指飛機(jī)

A radio beam would extend much farther than a signal of equivalent power that is broadcast in all directions.

相較于具有相同能量、但朝著各個(gè)方向播送的訊號(hào)，聚集成束的無(wú)線電波可傳遞得更遠(yuǎn)。

beam, the radio beam cannot be made very sharp;

無(wú)線電射束也象探照燈的光束一樣，是不能高度集中的；

Self-focusing and defocusing of narrow radio beam in lower ionosphere

無(wú)線電窄波束在低電離層中的聚焦和散焦