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- It is usually expressed as (Hz) Hertz or CPS (cycles per second). 一个完整周期为360度，相角就是用度数来表示两个波的距离。
- The number of cycles per second is the frequency. 而频率则是指每秒可完成的周期数。
- In the US most household current is AC at 60 cycles per second. 在美国，大部分家用电器使用赫兹的交流电。
- A unit of frequency equal to one cycle per second. 赫兹频率的单位，等于每秒一周
- Frequency is measured in hertz, or cycles per second. 频率用赫兹即每秒钟的周数来计算。
- This radio signal has a frequency of 800000 cycles per second. 这个无线电讯号的频率是每秒八百千周。
- Having a pitch corresponding to a relatively small number of sound-wave cycles per second. 低音的与一相对少量的每秒钟音波周期相对应的低音的
- They typically center on a range of 1. 5 to 4 cycles per second. 频率集中在每秒1.;5周至每秒4周之间。
- The frequency of modulation was 40 cycles per second. 调制频率是每秒钟40个周期。
- Analogue bandwidth is measured in Hertz (Hz), cycles per second. 类比式频宽以赫兹测量每秒的传送周期.
- Electricity in El Salvador is 115 Volts, alternating at 60 cycles per second. 萨尔瓦多电流的电压是115伏特、60赫兹。
- The hertz (Hz), a unit of frequency in cycles per second, is named for him. 频率单位hertz（Hz，等于每秒周数）即是以他的名字命名。
- In fact, many cortical cells are known to fire at rates between10 and40 cycles per second without external provocation. 事实上，许多皮质神经元在没有外来刺激的情况下，每秒的放电频率是10~0次。
- For low-frequency currents(up to about 15, 000 cycles per second)an iron core, called a magnetic circuit; is placed. 对于低频率电流（约15，000周/秒以内），置有一个叫作磁路的铁心。
- Electricity in Czech Republic is 230 Volts, alternating at 50 cycles per second. 捷克共和国电流的电压是230伏特、50赫兹。
- Electricity in Papua New Guinea is 240 Volts, alternating at 50 cycles per second. 巴布亚新几内亚电流的电压是240伏特、50赫兹。
- Although Tesla developed several two-wire motors, these so-called split-phase designs ran best on currents of 50 cycles per second or less. 虽然特士拉研发出好几种双线式马达，但这些所谓的分相式设计最好是以50赫兹或更低频率的电流推动。
- LIGO and the other ground-based detectors are sensitive to frequencies from a few tens of Hertz (cycles per second) to a few thousand Hertz. LIGO和其它的地基探测器对从几十赫兹（每秒的周期数）到几千赫兹的频率都是敏感的。
- Humans in the prime of life can hear noises up to about 20,000 cycles per second. 人在壮年的时候可以听到最高20000周秒赫的噪音。
- The speed of a computer is usually expressed in cycles per second. Typical machines operate at 100 to 200 megahertz or 100 million to 200 million cycles per second. 计算机的速度通常用每秒（执行）的（时钟）周期来表示。典型的机器运转在100到200兆赫或者说每秒100到200兆周期。
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