工频

This finding gives a good explanation to some experiment results which were not understood previously, such as"additional temperature effects"meaning that the flashover voltages after air density correction still increase with the decrease of temperature, and the increment of AC flashover voltage over an insulating surface caused by increase of unit absolute humidity is abnormally high, etc.

根据这一发现，可以很好地解释以往无法解释的一些试验结果，如所谓"温度的附加影响"，即同一绝对湿度对应的工频闪络电压，经过空气密度校正之后，仍随环境温度下降而明显增加。

Through the experimental data processing, the curve of the transfer characteristic and the relationship equation are gained in this paper.

由测量数据拟合出了球形探头在工频电场和冲击电场作用下的变换特性曲线，得到了探头变换特性的关系式。

Was established in January 1994, is the production, development of frequency / switch power transformers, matching transformer, IC card sensor coils, communications equipment receiver coil, Choke / depositors can, to linear inductance and Air Core coil, EMC filter frequency energy-saving system and the professional manufacturers.

金竹电子有限公司成立于一九九四年一月，是生产、开发工频/开关电源变压器、匹配变压器、IC卡传感器线圈、通讯设备接收线圈、扼流/存能、行线性电感、空芯线圈，EMC滤波器及变频节电系统的专业厂家。

If direct current amplification is used, effective 第三级 measures to restrain 抑制 influences of disturbance signals must be adopted.

输过程中容易受到工频及其他信号的干扰，若采用直流放大则在传输过程中必须采用有效措施抑制干扰信号的影响。

In the process of on-the-spot measurment of dielectric loss, the problem of power frequency interference is very serious.

在电气设备绝缘介损的测量过程中，工频干扰问题非常突出。

Results Contents of this construction project including the selection of site,the overall layout,the arrangement and layout of the facilities,occupational disease prevention and protection measures,the facilities of auxiliary rooms accorded with the requirements of laws and regulations of occupational health,the main occupational hazard factors that exist in this construction project were dusts,poisonous chemicals,noise,vibration,high-temperature,heat radiation,ultraviolet ray,Power-frequency electric fields and radioactive hazards and electromagnetic radiation.

结果该建设项目的选址与总体布置、生产设备布局、职业病防护设施、个人使用的防护用品、职业卫生管理、生活饮用水、辅助用室等符合国家有关法规，该项目生产过程中产生的主要职业病危害因素有：粉尘、毒物、噪声与振动、高温与热辐射、紫外线、工频电场、电离辐射等。

On the railway of electrization, power supply mode is requested to be the single-phase alternating current.

在铁道电气化牵引区段，牵引供电网采用单相工频交流电供电方式。

And the computational analysis result has been verified through the electrobath and test method. Based on the above-mentioned research work, the 1000 kV standard capacitor has been designed and manufactured.

利用理论分析、数值计算以及试验研究的结果，设计并研制了1000kV标准电容器，并对该标准电容器进行了有关型式试验，电容稳定性、介质损耗、工频耐受电压等技术性能指标均达到同类产品国际先进水平。

The results show that the vibration intensity of the substructure has a connection with the depth of the well, the geological condition and the density of drilling fluid; the horizontal vibration of the substructure is mainly caused by bent kelly; the included angle between the axis of cardan shaft and the derrick floor is also the cause of the vibration in three directions, and the cause of t...

分析结果表明，底座的振动强度与井深、地质条件和钻井液密度有关；弯曲的方钻杆是造成底座水平方向振动的最主要原因；万向轴因与钻台面存在夹角，从而引起底座在三个方向的振动；采用四挡钻进时，万向轴的工频及其倍频接近底座垂直方向的固有频率是引起底座在该方向振动强烈的原因。

The Two Way Automatic Communication System is implemented by modulating the power voltage at preselected zero of the voltage waveform of the distribution network.

双向工频电力通信的基本原理是利用工频电压基波波形过零信息实现信号的调制和解调。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。