这种分析方法也适用于极低频到甚高频波段。
This analytic method is also suitable for the bands of extremely low frequency (ELF) and very high frequency (VHF).
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。
The important frequencies for stimulating tissue repair are all in the biologically important extremely low frequency (ELF) range.
在茫茫大洋深处，唯一可用的通信手段就是甚低频或者极低频无线电。
Out in the no-mans land of the international waters are the only means of communication with the submarines to use radio in the vlf or elf range.
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。
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.
UWB宽阔的频率范围包括了极低频率，美国海军将它用于与水中潜艇的通信。
UWB's broad frequency range includes the ultralow frequencies the U. s. Navy USES to communicate with submerged submarines.
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。
This falls in the extremely low frequency (ELF) range which includes frequencies up to 300 Hz.
这种黑洞很可能用作地下天线能够充电电池潜艇在太平洋和印度洋，通过极低频广播。
Such a hole is likely used as an underground antenna able to recharge the batteries of submarines in the Pacific and Indian Ocean through ELF broadcasts.
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。
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.
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。
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.
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。
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.
从箱体阻尼损失来看，导向孔和双反射带通箱设计在极低频下比密封箱和单反射式带通箱设计有着更大的失真。
Related to the loss of enclosure damping, ported and dual-reflex bandpass designs also exhibit higher distortion levels at very low frequencies than sealed or single-reflex bandpass designs.
电磁场防护结构工艺、被动轴接地系统、主动轴接地系统和电场抵消系统是目前降低舰船极低频电场的主要方法。
The main methods used to reduce ELFE include electromagnetic field protection technology, driven shaft earthing system, drive shaft earthing system and electric field counteracting system.
提示环境极低频电磁场暴露与肿瘤的危险度，以及其他非肿瘤性健康效应之间的相关性是很微弱的，甚至是不确定的。
The results show that the association between ELF electromagnetic fields and the risk of tumors as well as non-tumor health effects is very weak even uncertain.
众多研究表明，暴露在极低频率电磁场的儿童罹患白血病的风险增加，但极低频率电磁场似乎不增加乳腺癌和心血管疾病的发病风险。
Studies have consistently shown increasing risk for childhood leukemia associated with ELF-EMF, whereas ELF-EMF most likely are not a risking factor for breast cancer and cardiovascular disease.
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。
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.
在音响设备中出现的振荡频率极低的低频振荡，常因放大系统的正反馈回路引起。
In audio, a very low frequency oscillation often resulting from a positive feedback path in an amplifier system.
在音响设备中出现的振荡频率极低的低频振荡，常因放大系统的正反馈回路引起。
In audio, a very low frequency oscillation often resulting from a positive feedback path in an amplifier system.
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