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1)  shaft-rate electric field
轴频电场
1.
According to the characteristic of shaft-rate electric field of ships,the recognition and classification methods of ship targets based on wavelet transform and neural network were proposed.
根据舰船轴频电场信号的特点,提出了基于小波变换和神经网络的目标识别和分类方法。
2.
According to the characteristic of the shaft-rate electric field of a ship,this paper proposes a detection method for the target signal based on the wavelet transform.
根据舰船轴频电场信号的特点,提出了基于小波变换的目标信号检测方法。
2)  shaft-frequency electric field
轴频电场
1.
Research on the corrosion related to shaft-frequency electric field;
船舶腐蚀相关的轴频电场特征
2.
Transmission characteristic of shaft-frequency electric field based on ship s physical scale model;
船舶缩比模型轴频电场的传播特征
3)  shaft-rate electromagnetic field
轴频电磁场
1.
On weak signal detection in ship′s shaft-rate electromagnetic field based on chaotic oscillator
基于混沌振子列的微弱舰船轴频电磁场信号频率检测
4)  ship axle frequency electric field
舰船轴频电场
1.
Based on contract than model theory, a ship axle frequency electric field simulation system was put forward in this article, introducing the basic structure of the system, working .
提出了基于缩比模型理论的舰船轴频电场仿真系统,同时介绍了该系统的基本组成、实现方法和功能。
5)  Axial electric field
轴向电场
1.
From the spinorial form of the Lorentz-force equation, the problems about axial electric field and axial magnetic field of charge motion in electromagnetic fields, as well as plane-wave pulse and Larmor power have been discussed in this paper.
从洛仑兹力方程的旋量形式出发,讨论了电磁场中电荷运动的轴向电场和轴向磁场问题以及平面波的脉冲和Larmor功率。
6)  high frequency electric field
高频电场
1.
This paper mainly focuses on the anti scaling test by high frequency electric field and also discusses the effects of electric field frequency, strength, calcium concentration in water, pH value and heating time,etc.
本文对利用高频电场处理水的防垢效果进行了试验,讨论了电场频率、强度、水中钙浓度、pH以及加热时间等因素对防垢效果的影响。
2.
The water is treated by high frequency electric field when it flows into the pond and then lower oxygenating eniqution is pumped into the water through deep .
以物理方法即采用高频电场处理入池养殖水,然后通过管道深层压入空气,改变传统的释放头对养殖地水曝气加氧,使养殖池水的平均溶氧量在不断被消耗情况下,仍可达7。
补充资料:变电所工频电场


变电所工频电场
electric field of substation

  b一ond一onsuo gongPln dlonehong变电所工频电场(eleetrie field of substation) 变电所运行时各种带电导体上的电荷和在接地架构上感应的电荷在变电装置所处广大空间产生的工颇电场。由于变电所内带电导体纵横交错,带电设备和接地架构多种多样,变电所内的工频电场是一个复杂的三维场分布,它的表征、计算和测量较输电线路复杂。翰电线下离地Zm以内电场变化很小,可以认为是均匀的,一般可用离地1.sm处场强来表征该点电场水平。变电所内大部分区域,由于带电体和接地架构同时并存,离地Zm以内电场变化很大,为准确的表征某点电场水平,需要同时给出地面、离地0.sm和离地1.sm三个场强值。对330 kV及其以上电压等级的变电所,工频电场的限值是设计时应考虑的主要条件之一。为了预计新建变电所电场水平和分布,一般采用将变电所按一定比例缩小,所加电压也按比例缩小,用模拟的方法来预测,也可采用计算的方法。表征变电所的电场分布,可给出地面或离地面一定高度的等场强线、大于某一场强的高场强区或给出典型间隔和设备纵向或横向电场分布。 变电所工作人员接近带电高压设备的机会多,场强限值除要考虑暂态电击和稳态电击外,还要考虑电场长期作用可能的生态效应。但由于变电所工作人员通常均具有防止暂态和稳态电击知识,且每天在较高电场中停留的时间不长,因此各国都将变电所内的允许工频电场定得比线路邻近居民区和跨越公路处的要高。对运行人员经常巡视或检测必经的地方,一般规定为小于8 kV/m,其他地方则不大于10 kV/m,少数地区允许最大场强为10~15kV/m。而变电所围墙处场强则不大于skV/m。为满足这些要求,除适当提商带电体对地高度外,有时还采用合理安排带电体的排列以及并列或重叠回路的相序等措施,从结构布t上减小地面电场。500 kV及以上的新变电所投运后,一般都要对变电所内电场进行一次全面测量,绘出高场强区的范围和电场分布。为避免火花放电引燃可燃气体,在变电所的工频电场区内禁止进行加人或取出汽油的作业。
  
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