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- 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。
- A long range link,established with the high power Very Low Frequency (VLF) system,resists atmospheric nuclear effects and is very difficult to jam. 用高功率甚低频系统建成的一条远距离链路，可抵抗大气核爆炸效应，且敌人很难干扰。
- The Apo occurs at very low frequency and includes antipodal embryo and egg embryo. 无融合生殖胚囊发生比率极低，主要包括反足胚和卵细胞胚；
- The very low frequency electromagnetic method(VLF-EM) has such advantages as portable instrument,simple method,economical and high efficiency. 甚低频电磁法(VLF-EM),具有仪器轻便、方法简单、经济高效等优点。
- This paper briefly discusses the very low frequency(VLF) electromagnetic technique and takes Shancheng gold mine for example. 简要叙述了甚低频电磁法的方法技术,并以山城金矿为例。
- This breed is also known for his ability to foretell storms and avalanches, perhaps because he may hear very low frequency sounds that are beyond our ability to hear. 这个品种有能力预测风暴和雪崩,可能是因它们能听见非常低的频率,甚至低于我们能力所能听到的。
- The rate at which they leak out depends on the amplitude of very low frequency (VLF, or between one hertz and 20 kilohertz) electromagnetic waves in the vicinity. 水桶漏水的速率取决于附近极低频（VLF，频率介于1赫兹到20千赫）电磁波的振幅。
- Thus it realized effective extraction of all parameters of LFO signals and put forward a new explanation of the mechanism of very low frequency oscillation. 其次运用该文推导的阻尼比计算公式提取各振荡模态分量阻尼比，从而实现低频振荡模态参数的有效提取。
- When some alleles have very low frequency in the gene frequency matrix, there would be "horse-shoe effect" in the Scallergram of correspondent analysis. 当基因频率矩阵中存在稀有基因时，其对应分析的散点图则呈现明显的“蹄型效应”。
- Since the target glint is essentially a very low frequency phenomenon whose bandwidth is typically equal to or less than that of the system, it is difficult for a missile to filter it out, or will cause the miss to increase. 由于目标闪烁的频率通常小于或者与系统的频带相当，所以导弹无法滤掉此干扰信息，致使系统脱靶量增大。
- Using a method of the spatial frequency filtering by combining the directional filtering with the very low frequency filtering, the desirable optical signals cau be taken out of a considerably complex image. 采用方向性滤波与极低频滤波相结合的方法;可以从较复杂的图象中提取所需用的信号.
- The very low frequency electromagnetic (VLF-EM) method, adopted as the means of indirect exploration under certain geological settings, has been proved to be effective in grassland-capped areas. 在草原覆盖地区进行矿产资源勘查时,甚低频电磁法在一定的地质条件下是间接找矿的有效方法。
- Based on analysing sensitivity of receiving system of the naval mine,a new method which can use microcomputer software to accomplish all-around receive underwater of Very Low Frequency(VLF). 基于对水雷接收系统灵敏度的分析,提出一种可以用微机软件完成的甚低频水下通信全向接收新方法,完成数字化全向接收的理论推导。
- The main spectral components are distinguished in the heart rate variability spectrum: ultra low frequency(ULF),very low frequency(VLF), low frequency(LF), high frequency(HF) components . 心率变异性长时程功率谱主要成份分为超低频、极低频、低频、高频。
- OSA and CSA produced different patterns of heart rate variability, with OSA showing increased absolute high frequency power and reduced very low frequency percentage compared with CSA. OSA和CSA产生不同类型的心率变异性，OSA表现为增加高频带(HF)的能力以及降低极低频带(VLF)的比例分数，而CSA则与此相反。
- This area has very low rainfall. 这个地区雨量稀少。
- The price they quoted was very low. 他们报的价很低。
- Signals at very low frequencies, about 50 kHz and lower, can penetrate sea water very well. 信号在非常低频率,大约50千赫和降低,可能击穿海水很好。
- He was in very low water when I saw him last week. 上星期我见到他时他手头正紧。
- She said it in a very low voice. 她很低声地讲这话。
