infrasonic
/ˌɪnfrəˈsɒnɪk/ (bre, ipa) · /ˌɪnfrəˈsɑːnɪk/ (ame, ipa) · /ˌin-frə-ˈsä-nik -(ˌ)frä-/ (ame, mw)
infrasonic — 形容詞
- infrasonicpositive
- more infrasoniccomparative
- most infrasonicsuperlative
1. describing sound waves that are too low-pitched for human ears to detect — typic
次聲的
頻率低於人耳可聽範圍的
describing sound waves that are too low-pitched for human ears to detect — typically any frequency below about 20 hertz.
Diego's research team used infrasonic sensors to monitor volcanic activity in the Andes.
Diego 的研究團隊利用次聲感測器監測安地斯山脈的火山活動。
collocation: infrasonic sensor
Elephants produce infrasonic calls that can travel across several kilometres of open savanna.
大象發出的次聲叫聲可以穿越開闊草原上數公里的距離。
subject: animals producing infrasonic sound
The lab's infrasonic detector caught a signal from the earthquake seconds before the shaking started.
實驗室的次聲偵測器在地面開始搖晃前幾秒，就捕捉到了來自地震的訊號。
Mei-Lin explained how infrasonic waves from large storms can be detected hundreds of kilometres away.
Mei-Lin 解釋了大型風暴產生的次聲波如何在數百公里外被偵測到。
Wind farms sometimes produce infrasonic noise that residents feel as a vibration but cannot hear.
風力發電場有時會產生居民感覺得到震動、但聽不到的次聲噪音。
- inaudible
broader — any sound too quiet to hear, not specifically below the pitch range
- low-frequency
overlapping but less precise; low-frequency sounds can still be audible if loud enough
- ultrasonic
opposite end of the frequency scale — above human hearing range
文法句型
infrasonic + noun
用法筆記
Attributive only — this adjective nearly always appears before a noun (infrasonic wave, infrasonic frequency, infrasonic sensor). It is rarely used predicatively.