When such fields do not vary with time they are referred to as static and have a frequency of 0 Hz.
当这种磁场不随着时间而发生变化时它们被称为静态，所具有的频率为0赫兹。
These high frequencies correspond to the rotation speeds of centrifuges; America tightly controls the export of frequency converter drives able to operate at frequencies above 600 Hz.
这些高频率与离心机的转速相对应；美国对能够以600赫兹以上频率运行的频率转换器驱动的出口进行了严格管控。
It USES the value of 1 as the default for the audio channels and the value of 44100 Hz as the default audio sampling frequency.
它使用值1作为声道的默认值，使用值44100Hz作为默认的音频采样频率。
The audio sample frequency and audio bit rate for Flash are less than the default value of 44100 Hz while those for Windows Media Player and QuickTime are higher than the default value.
Flash的音频采样频率和音频比特率均低于默认的44100Hz，而WindowsMediaPlayer和QuickTime的则高于默认值。
This falls in the extremely low frequency (ELF) range which includes frequencies up to 300 Hz.
这种频率属于极低频的频率范围内，通常极低频的频带范围也在300hz以下。
However, if one of your games requires lots of very fast movements, we recommend you use a profile with a frequency set to 500 Hz maximum.
不过，如果你的游戏之一，需要大量的动作非常快，我们建议你使用的频率配置文件设置为500赫兹最大。
Some are not noticeable, but the most important one is that the earth's electrical frequency has risen in the last 10 years from 7.8 HZ to 12 HZ.
有些事情我们无法注意到，但最重要的一件事情就是地球的电频率已经由过去10年间的7.8赫兹上升到12赫兹。
Motion sensed by the body mainly in the 0.5 HZ ~50 HZ frequency range.
身体所能感知运动的频率范围通常在0.5赫兹到50赫兹之间。 义。
Third: Inverter-based welders let operators adjust the welding output frequency, from 20 to 250 Hz in the case of the Dynasty.
第三：逆变型焊接焊工让操作调节输出频率，从20到250赫兹的情况王朝。
A process which is coupled to the narrow band of brain temperature could allow all normal human brains to be affected by a sub-harmonic whose frequency range at about 10 Hz would only vary by 0.1 Hz.
与大脑温度的狭窄范围相对应的一种过程可能使得正凡人脑遭到一种频次范围在大约10赫兹并且只在0.1赫兹范围内变化的次谐波的影响。
A loudspeaker which emits sound of frequency 1000 Hz is placed several meters from a plane reflecting wall in a large chamber containing a gas.
扬声器发射的声音频率1000赫兹是放置数米，从平面反映墙在一个大型会议厅，载有天然气。
On usual DMM only can measure signal's amplitude of DC and AC from fifty to five hundred Hz, it can not measure signal's frequency or amplitude of high frequency.
数字万用表（DMM）只能测量直流和几十到几百赫兹的低频正弦信号幅度，不能测量高频信号和信号的频率。
We used a Mega Hz focused transducer to focus on the surface of the calculus model and tried different frequency, intensity, time and duty cycle.
本文利用兆赫兹频率级别的聚焦超声换能器诱发冲击波作用于结石模型材料，采用不同的声波参数包括频率、强度、占空比等进行了实验。
With a low end frequency response of -10% down to 0.31 Hz, the 3333A series accelerometers offer excellent phase response at low frequencies.
随着-10％下降至0.31赫兹的低端频率响应，3333A系列加速器提供优良的低频率相位响应。
When demand on the grid begins to exceed supply, the grid drops below its normal operating frequency – 50 Hz in the UK, 60 Hz in the US.
如电网需求开始超过供应负荷，电网将降到正常操作频率以下——英制50赫兹或美制60赫兹。
ON power plant to the lower frequency used by rail systems in central Europe - from 50 hertz (Hz) to 16.7 Hz.
ON电厂产生的电力频率转换成在中欧铁路系统所使用的更低频率——50赫兹到16.7赫兹。
The A4 reference frequency (calibration) can also be adjusted in a broad range from 410 Hz to 480 Hz.
参考频率的A4（校准）也可以调整从410赫兹到480赫兹在一个广泛的范围内。
A process which is coupled to the narrow band of brain temperature could allow all normal human brains to be affected by a subharmonic whose frequency range at about 10 Hz would only vary by 0. 1 Hz.
加在大脑温度窄带上的一个处理能够允许所有正常的人类大脑被谐波范围在大约10赫兹正负0.1赫兹的次谐波所影响。
However SF6 introduces a significant resonance at 200 Hz to 250 Hz and, for noise dominated by low frequency components, such as traffic noise, this might be detrimental.
只是，六氟化硫（SF6）在200赫兹到250赫兹这个频段会产生很大的回声，而这对于主要为低频率成份构成的噪声比如交通噪声的应用而言可能会有害。
For a sea-floor transient electromagnetic exploration system, its maximum transmitting frequency may be chosen as 200 Hz by supposing the sea-floor as horizontal thin conductive plates.
可控源时间域电磁法应用在海底探测，需要确定装置参数，通过实验和理论计算确定了发射频率的最大值；
Full-range frequency response (20 Hz - 20 KHz) for an extremely accurate reproduction of voice and instruments.
全范围的频率响应(20赫兹- 20千赫兹)极其准确地再现语音和仪器。
The generator (APU) provide AC power using an alternator that supplies 115 volts at 400 Hz frequency.
发电使用一个交流发电机，提供 115伏频率为 400赫兹的交流电。
DD862 single phase watt-hour meter is an induction meter which is applicable to measure the rated frequency of 50 Hz, and power loss of single-phase intercourse grid.
用途APPLICATIONDD862单相电度表系感应式单相交流有功电度表，用于计量额定频率为50hz，单相交流电网中有功电能的消耗。
Frequency of impulses should be regulated in range from 5 to 120 Hz.
冲动的频率应该加以管理，范围从5到120赫兹。
The minimum fluidization velocity has a minimum value when the frequency of sound waves approached 150 Hz, whereas it decreased as the sound pressure level was increased at the same sound frequency.
气泡尺寸和鼓泡频率随声压的增大而减小，随声波频率的增大先减小后增大。
In the low frequency range (1 Hz to 1 MHz), however, the inductor value becomes very large and the inductor itself gets quite bulky, economical production difficult.
然而，在低频范围(1hz至1mhz)中，电感器值变得非常大，并且电感器本身变得非常庞大，经济的生产困难。
Frequency resolution 1 Hz, also suitable for extremely narrowband tests.
第1赫兹的频率，也适用于极为窄带测试。
Frequency resolution 1 Hz, also suitable for extremely narrowband tests.
第1赫兹的频率，也适用于极为窄带测试。
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