very low frequency
英 [ˈveri ləʊ ˈfriːkwənsi]
美 [ˈveri loʊ ˈfriːkwənsi]
甚低频（3-30千赫）
双语例句
- 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。 - 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。 - Emissions of light and very low frequency perturbations due to electromagnetic pulse sources
因电磁脉冲源引起的光辐射和甚低频微扰 - The selection of the insulator applied for a large power very low frequency transmitting antenna were studied.
本文对大功率甚低频发射天线用绝缘子的选型进行了研究。 - 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。 - A very low frequency of transmittance to visceral tissue was confirmed in pigs, but not in sheep.
确认了猪，但不是羊，会发生非常低频率的（基因片段）内脏组织转移。 - Existing predominantly, in the Very Low Frequency part of the radio spectrum that corresponds with the audio frequency range, we can experience this activity as audible sound.
尽管这种活动主要存在于无线电声音频率分区的超低频区域，我们还是能够通过听觉来捕捉到它。 - Very low frequency band radiated field system
甚低频带辐射场系统 - 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。 - Due to the fact the values of S_ φ( f) are very low in this frequency range, it is necessary to measure them by a test set with very low testing threshold.
由于在这f段的S（f）值甚小，故必须用测试低限很低的测试设备。 - New results in medium voltage cable assessment using very low frequency with partial discharge and dissipation factor measurement
用极低频以局放和损耗因数测量来鉴定中压电缆的新成果 - Spectrum shaping filter has low compensation rate and it has very low compensation in high frequency, thus it can not improve the resolution of seismic prospecting apparently.
频谱整形滤波器的高频提升速率低，高频补偿严重不足，它对分辨率的改善不会起到明显的作用； - Feasibility and System Design of Very Low Frequency Electromagnetic Remote-Controlled Naval Mine
甚低频遥控水雷的可行性分析与系统设计 - Using half-empiric method, C-layer effect of very low frequency ( VLF) propagation phase is analyzed and modeled, moreover, the function of VLF phase prediction is modified.
应用半经验方法对甚低频（VLF）传播相位的C层效应进行了分析和建模，改进了VLF传播相位预测函数。 - The sixteen out of twenty-two observational Very Low Frequency surveying lines along the fault demonstrate low value anomalies of horizontal e-lectric field and resistivity, and the width of the anomaly extension is 60~ 120m.
沿该断裂实测22条甚低频测线，其中16条测线结果显示出水平电场及电阻率的低值异常，其异常范围宽度60～120m。 - The active control of noise is a very effective method to minimize low frequency noise.
有源噪声控制是消除低频噪声的一种很有效的方法。 - With very low loss at high frequency, alumina ( 96%, 99%), beryllium oxide ( BeO) and aluminium nitride ( AlN) ceramics are excellent substrates for microwave and RF circuits.
氧化铝（96%，99%）、氧化铍和氮化铝陶瓷的高频损耗很低，是优良的微波和RF电路用基板。 - Research on Servo Control Method for Tracking with Pulse Based on Very Low Frequency
基于极低频输入下脉冲跟踪伺服控制方法研究 - Giant magnetostrictive actuator and its hysteresis analysis Study on the characteristics of electrical tree with bush structure and growing very slowly in low frequency
超磁致伸缩电&机械转换器设计及其滞回特性分析交联聚乙烯中的滞长型丛林状电树枝特性研究 - This paper deals with a digital speech communicator of very low frequency and low bit digital communication based on software ratio, which uses the technique of QPSK and FEC coding.
本文论述了一种基于软件无线电的甚低频低码率语音数字岩层通信机，它采用了QPSK调制和FEC信道编码技术。 - This paper analyses the electromagnetic radiation with very low frequency caused by the power-supply wiring of household appliances.
本文讨论了家用电器馈（电）线所产生的“特低频电磁辐射”问题。 - The Power-supply Wiring in Living Room and Electromagnetic Radiation with Very Low Frequency
居室电源布线与特低频电磁辐射 - Observation and study on phase of very low frequency propagation over polar area
甚低频横跨极区传播相位的观测与研究 - Test of XLPE/ PE Cables Using a Very Low Frequency Method
用超低频方法进行XLPE/PE电缆试验 - The application of the very low frequency electromagnetic method to the exploration of a fluorite deposit
甚低频电磁法在某萤石矿勘查中的应用 - In vitro morphogenesis in A. rivieri occurred mainly through organogenesis while somatic embryogenesis took place under special culture conditions but with very low frequency. Most somatic embryos cannot convert to plants due high-frequency abnormality in these embryos.
魔芋形态建成以器官发生途径为主，在特定培养条件下也可形成体细胞胚，但频率极低，且绝大部分体胚因高度畸形化而不能形成再生植株。 - ACTC mutation may be of very low frequency both in Chinese patients with DCM and HCM.
ACTC基因在国人DCM和HCM患者中的突变频率可能很低。 - Among female sex workers, the intervention coverage rate is still very low, the frequency and depth of promotion and intervention is not enough.
针对暗娼人群的干预覆盖率还是很低，宣传干预的频度和深度还不够。 - In high frequency, loss in traditional antenna is very great; in low frequency, traditional antenna is too big for use. So, there are many limits for traditional antenna in modern wireless communication system and we hope an new antenna imminently.
传统的天线由于在高频段时候的损耗太高，而在低频段的时候几何尺寸大等缺点，在现代无线通信系统中的应用受到了很多限制，所以人们迫切地希望能有新型天线的出现。