extremely low frequency
极低频：指无线电频谱中最低频率范围内的一种频率。
常用释义
英式发音
美式发音
基本释义
- 极低频：指无线电频谱中最低频率范围内的一种频率。
例句
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1·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。
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2·This analytic method is also suitable for the bands of extremely low frequency (ELF) and very high frequency (VHF).这种分析方法也适用于极低频到甚高频波段。
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3·The biological effect of extremely low frequency (ELF) electromagnetic field on human body is a question in dispute.低频电磁场是否对人体或生物存在不良影响，一直是学者们争议的课题。
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4·The important frequencies for stimulating tissue repair are all in the biologically important extremely low frequency (ELF) range.为促进组织修复的重要频率在生物的重要极低频所有(低频)的范围。
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5·Objective To study the effects of extremely low frequency electromagnetic field(ELF EMF) and its combination with lead on the antioxidant system in mouse brain and liver tissues.目的研究极低频电磁场及其与铅的联合作用对小鼠脑和肝脏抗氧化系统的影响。
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6·The current situation, present questions, future research direction of effects and application of extremely low frequency electromagnetic field on human health are introduced in this paper.简要介绍了极低频电磁场对人类健康的影响和应用研究的现状、存在问题及未来研究方向。
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7·The extremely low frequency electromagnetic fields (ELFEMF) were very related to humans health and living environment and its biological effects were more and more interested to scientists.极低频电磁场(ELFEMF)与人类的生存环境及健康密切相关，其生物学效应也倍受关注。
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8·Objectives to investigate intensity of extremely low frequency magnetic field (ELFMF) emitted from cathode-ray tubes (CRT) of monitors in various directions and to find ways to avoid its influence.目的研究电脑阴极射线管显示器正前方不同距离和不同方位的极低频磁场(ELFMF)强度，就如何减少ELFMF的影响提出初步建议。
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9·This makes achieving negative permeability under extremely low frequency as well as the permeability switching between positive and negative value rapidly through a magnetic field pulse into possible.这使实现极低频的负磁导率以及通过磁场脉冲实现磁导率在正负之间快速跳变成为可能。
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10·They have an incredibly wide frequency range, especially in the low end, and even at extremely high gain Settings.他们有令人难以置信的频率范围宽，特别是在低端，甚至在非常高增益设置。