radiofrequency background
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radiofrequency

/ˈreɪdiˌoʊfriːkwənsi/ /ˈreɪdiˌoʊfriːkwɛnsi/

Meanings
noun

射频，无线电频率

That part of the electromagnetic spectrum, between about 3 kHz and 300 MHz, within which radio waves are transmitted.

Examples :

"The radiofrequency signals from the school's intercom system could be heard throughout the entire building. "
学校对讲机系统发出的射频信号在整栋大楼都能听到。
frequency signal electronics physics technology communication science

Related Words

Illustration building

building noun

/ˈbɪl.dɪŋ/

建造，建设。

"The building of the bridge will be completed in a couple of weeks."

这座桥的建造工程将在几周内完工。

Illustration pertaining

pertaining verb

/pəˈteɪnɪŋ/ /pɚˈteɪnɪŋ/

属于，关于。

"The documents pertaining to my car insurance claim are now all submitted. "

关于我的汽车保险索赔的所有文件现在都已经提交了。

Illustration nosebleeds

nosebleeds noun

/ˈnoʊzˌblidz/ /ˈnoʊzbliːdz/

流鼻血，鼻出血

"The dry air in winter often causes me to get nosebleeds. "

冬天空气干燥，我经常会流鼻血。

Illustration carefully

carefully adverb

/ˈkɛːfli/ /ˈkɛɹfli/

小心地，谨慎地，细致地

"He listened carefully to his mother's concerns, feeling sorrowful about her disappointment. "

他小心地听着母亲的担忧，为她的失望感到难过。(Tā xiǎoxīn de tīngzhe mǔqīn de dānyōu, wèi tā de shīwàng gǎndào nánguò.)

Illustration frequency

frequency noun

/ˈfɹiːkwənsi/

频率， 频度.

"The frequency of bus service has been improved from one every 15 to one every 12 minutes."

现在公交车的发车频率提高了，从原来的每15分钟一班改为每12分钟一班。

Illustration intercom

intercom noun

/ˈɪntərkɒm/ /ˈɪntərˌkɒm/

对讲机，内部通话系统

"emergency intercom"

紧急内部通话系统

Illustration throughout

throughout adverb

/θɹuˈʌʊt/ [θɹuːˈʷaʊt]

自始至终，遍及。

"The teacher explained the lesson thoroughly throughout the entire class period. "

老师在整个课堂时间里自始至终透彻地讲解了课程。

Illustration radiation

radiation noun

/ɹaɪ.di.ˈaɪ.ʃən/

辐射，放射。

"heat radiation"

热辐射 (Rè fúshè)

Illustration electromagnetic

electromagnetic adjective

/ɪˌlɛktroʊmæɡˈnɛtɪk/ /ɪˌlɛktrəʊmæɡˈnɛtɪk/ /iˌlɛktroʊmæɡˈnɛtɪk/ /iˌlɛktrəʊmæɡˈnɛtɪk/

电磁的

"The cell phone emits electromagnetic waves that allow us to communicate. "

手机发出电磁波，让我们能够进行通信。

Illustration transmitted

transmitted verb

/tɹænsˈmɪtɪd/

传送，传递，发送。

"The teacher transmitted the homework assignment to the students via email. "

老师通过电子邮件把作业布置传达给了学生。

Illustration spectrum

spectrum noun

/ˈspektɹəm/ /ˈspɛkt(ʃ)ɹəm/

范围，光谱，幅度

"The spectrum of emotions my sister displayed during the argument was wide, from anger to sadness to confusion. "

在这场争论中，我妹妹表现出的情绪范围很广，从愤怒到悲伤再到困惑，各种各样的情绪都有。

Illustration interfering

interfering verb

/ˌɪntərˈfɪrɪŋ/ /ˌɪntɚˈfɪrɪŋ/

干涉，介入，妨碍。

"I always try not to interfere with other people’s personal affairs."

我总是尽量不干涉别人的私事。