1) radiofrequency electromagnetic fields
射频电磁场
1.
Therefore the growing radiofrequency electromagnetic fields (RF EMF) exposure emitted by mobile phone in the range of 800 to 2000 MHz, mainly 900 and 1800 MHz, has raised public concerns about its potential health hazard.
随着移动通信事业的快速发展，手机使用人群日益扩大，环境中由手机及其基站产生的800-2000 MHz手机射频(以900和1800 MHz为常见)辐射范围和强度不断增大，从而引起人们对移动通信安全性和射频电磁场暴露的担忧。
2.
Mobile telecommunications has notably expanded recently, and results in increasing concerns for possible adverse effects induced by radiofrequency electromagnetic fields (RF EMF) emitted from mobile phones (MPs) on public health.
0W／kg作为射频电磁场(简称射频场)暴露的安全限值。
3) hazards of radio frequency electromagnetic field
射频电磁场的危害
4) RF electric field
射频电场
5) low-frequency electromagnetic field
低频电磁场
1.
Investigates experimentally and comparatively the as-cast microstructure and Cu macrosegregation of 2024 Al alloy ingots by HDC(horizontal direct chill) continuous casting process in low-frequency electromagnetic field and those by conventional horizontal continuous casting process,where the cross-sectional area of specimens is 40 mm×200 mm.
实验结果表明,低频电磁场可以显著地改善铸锭的微观组织,使铸锭的微观组织得到明显细化;低频电磁场还可以减少Cu元素在横截面上的宏观偏析,使Cu元素在横截面上的分布更加均匀。
2.
This paper provides a convergence analysis of finite element methods for the low-frequency electromagnetic fields in multi-media based on an A-φ scheme.
文中提出了求解多媒质中低频电磁场的一个全离散耦合A-φ方法。
3.
The results show that the low-frequency electromagnetic field effects on the formation of the CaCO3 grain by accelerating nucleation and suppressing crystal growth for scale inhibition.
文章利用电导率和钙离子浓度的变化研究了低频电磁场对碳酸钙结晶的影响,并分析了碳酸钙结晶体的微观结构。
6) power frequency electromagnetic field
工频电磁场
1.
Study on the power frequency electromagnetic field under UHV transmission lines;
特高压输电线路下方工频电磁场的研究
2.
Based on the measured results of electromagnetic field of the transformer substations above 110kV level in Fujian and Zhejiang provinces,the space distribution rule of power frequency electromagnetic fields on and out of the boundary of various voltage level transformer substations are researched.
以闽、浙两省110 kV以上等级变电所的电磁场监测结果为基础,着重研究了各电压等级变电所边界处及边界外的空间工频电磁场场强分布规律,分析和探讨了变电所外空间电磁污染的现状,为进一步开展变电所的电磁环境影响研究提出了建设性意见。
3.
Theoretical analysis is conducted for the power frequency electromagnetic field and radio interference in power transmission & distribution project.
对输变电工程工频电磁场、无线电干扰进行了理论分析,指出输变电工程工频电磁场是感应场,而非辐射场。
补充资料：变电所快速暂态电磁场
变电所快速暂态电磁场
fast transient electro-magnetic fields in substations
变电所中快速暂态电磁场强度由于开关操作暂态过程受多种因素影响.因此变电所中实际测t得到的场强数值分散性较大。不同电压等级变电所，用不同型式开关，实测得到的电场强度可达数十千伏/米(kV/m).磁场强度可达数百安培/米(A/m).美国对变电所中操作暂态电磁场的实测工作做的较多。作为一个例子，下表列出了美国电力研究院(EPRI)在115kV、250 kV、500 kV变电所中的实测结果。常规变电所内测点在母线下方地面，操作是断开一段短母线，一川纵潮洲娜朋洲川一0 0 0 0 0 00411:1l)即10 010加 ︵任守︸侧欲典匆 6 .0臼.《】火l()《a)T(5、留一。·““nlj 0 50几00 .，0.1 10 (任/A艺侧蔽2.()魂.硬)丫﹂)()口匕t卜卜片卜f乙仁0 t 0 0 0 0 005 .....-卜闭40加020化 (‘/V)侧旧要翻，::.:: l二‘.1.吐吐.吐2.《)4.(】6 .0划) 了卜卜┌────┬──────┐│ 一一J │八L，‘一’ ││习 ├──────┤│一一.1 │{犷V一· │└────┴──────┘0﹃-j门1 96，JD.任1 9 tl滩n乙oq乙 ︵三z淤巴侧翻要御 (一。一‘)洲.‘}12‘)一6(，义1‘，一‘， 喊d)T(5) 500 kV变电所内断开隔离开关时 的地面电场和磁场(a)GIS磁场;(b)GIS电场;(e)AIS滋场;(d)AIS电场b一and一onsuo kuolsu zonto一d一onelehong变电所快速暂态电磁场(fast transient elec-tromagnetie fields in substations)变电所中隔离开关切、合短母线时的暂态过程产生的电磁场。高压隔离开关操作时，触头间产生一系列电弧过程。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条