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- Echolocation calls are usually ultrasonic ranging in frequency from 20 to 200 kilohertz (kHz),whereas human hearing normally tops out at around 20 kHz. 用于回声定位的叫声一般是20－200千赫之间的超声波，而人所能听到的最高频率在20千赫左右。
- Echolocation calls are usually ultrasonic ranging in frequency from 20 to 200 kilohertz (kHz), whereas human hearing normally tops out at around 20 kHz. 用于回声定位的叫声一般是20－200千赫之间的超声波，而人所能听到的最高频率在20千赫左右。
- Telephony 3,1 kHz teleservice.Service description. 英文标题： Integrated Services Digital Network (idsn).
- The frequency at zero current is 60[kHz]. 零电流的频率为60 [千赫] 。
- They sat aside 100 channels, each 200 kilohertz wide. 他们在旁边坐了100种渠道,各200千赫宽。
- Most telephones reproduce 300 hertz to 3.5 kilohertz. 大多数电话重现300赫兹到3.;5千赫。
- Its common mode rejection ratio(CMRR) was 65 dB at 100 kHz. 在100kHz时,该系统仍具有65dB的共模抑制比。
- A twisted pair has a bandwidth of up to 250 kHz for analog signals. 双扭线对于模拟信号可有高达250赫兹的带宽。
- The filter would block all signals of frequencies above 10 kHz. 这种滤波器将过滤掉频率在10kHz以上的所有信号。
- Some Horseshoe bats can detect differences as slight as 0. 0001 KHz. 一些马蹄铁形蝙蝠能探测到细微至0.;0001千赫的差别。
- An optional 20 kHz test frequency can be added to those five frequencies. 还能增加可选的20kHz测试频率。
- Commercial AM stations operate in the frequency range of 535 to 1605 kHz. 商业调幅电台的运作频率范围为535千赫(khz)到1605千赫。
- S.Air Force has a FSK-based communications system on 29.5 and 37.2 kHz. 美国空军有一个基于FSK的通信系统在29.;5和37
- Twisted-pair conductors are sufficient if frequencies of interest are below a few hundred kilohertz. 如果信号频率低于几百kHz，则使用双绞线就已足够。
- Clock frequencies up to hundreds of kilohertz might be achievable, but don't look for gigahertz-rated organic chips anytime soon. 或许可以做到几十万赫兹的时脉，但在短期内别想要有10亿赫兹等级的有机晶片。
- Any radio waves with frequencies below about one kilohertz (a wavelength of greater than 300 kilometers) cannot penetrate into our galaxy. 我们现在意气风发的要看的更多更远，我们的知识在累积在修正，在通向终极真理，如果它存在的话；
- This picture shows the frequencies18.5-18.7 kHz which were sent from a brain transmitter. 这个图显示了从一个大脑信号传输器传来的18.;5-18
- R3263, with 9 kilohertz arrive limits of frequency of 3 thousand conspicuous, reportorial standard corresponds for flow according to global system (GSM) . R3263, 与一个9 个千赫到3 千兆赫频率规模, 报导尺度按照寰球性系统为流动通信(GSM) 。
- "Ultrasonics: Vibrational or stress waves in elastic media that have a frequency above 20 kilohertz, the highest frequency of sound waves that can be detected by the human ear. 超音波:弹性介质中的应力波，其频率在2万赫以上，最高频率超出人耳可听闻的声波频率。
- Feed through filters provide high Insertion loss over a broad band of frequencies from KHz to GHz frequency levels. 馈通式滤波器在宽频范围从KHz到GHz段,提供高插入损耗。
