low attenuation range
low attenuation range 双语例句
Firstly, the working mechanization of ultrasonic transducer is studied. A driving circuit for medium and low power transducers is presented by accurate derivation. According to the ultrasonic attenuation characteristic, automatic gain control circuit is designed. This circuit can extend the dynamic range of echo signal and improve ranging precision. Based on a system-on-a-chip microprocessor, the hardware platform of ultrasonic ranging system is set up. Experiments show that this system can reject noise signals strongly and improve the range coverage of transducers to a certain extent.
文章首先研究了超声换能器的工作机理，通过理论推导并与实验相结合，设计了一种适合中小功率换能器的驱动电源：研究了超声波在空气中传播的衰减特性，设计了自动增益控制电路，扩大了超声信号处理的动态范围和处理精度；采用系统级芯片搭建了一套超声测距系统的硬件平台；通过实验验证，系统具有较强的噪声抑制能力，可以在一定程度上扩展超声换能器的作用距离。
The result of the experiment verifies the conclusion of the theoretical simulation, and shows that the tightly packed structure has a satisfactory acoustic attenuation performance in a wide frequency range and a very low resistance loss.
实验结果验证了仿真计算所得到的结论，表明所设计的水消声器不仅结构紧凑，而且在很宽的频率范围内都有令人满意的消声效果；
In low field range, the change of current with time can be simulated by attenuation of power index, and the attenuation coefficient intends to decline with the increase of the applied electric field.
在弱场下，电流随时间的变化可用幂指数的衰减来模拟，而且衰减系数随场强的增加有减小的趋势。
For the relative deep target lay-ers in China, the low-cut filter can be used for compensating the signal attenuation of high frequency and make it a proper instantaneous dynamic range of instrument.
针对我国较深的勘探目的层，用较高的低截滤波来补偿深层高频的弱信号，使之装入仪器的瞬时动态范围有独到的作用。
Large fluid viscosity or low permeability (High couple damping coefficient) make the shift to high frequencies of the main dispersion frequency range, and the attenuation coefficient knee points for the different frequency dependence, which represents the relaxation frequency movement to high frequencies.
高粘性流体和低骨架渗透率（高的固流耦合衰减系数）使得主要频散发生的频率范围，和衰减系数出现不同频率响应特征的鞍点向高频移动，这反映松弛频率向高频段移动。
A measurement system was provided for measuring an average transverse wave velocity and attenuation coefficients of underwater acoustic materials in the frequency range 10-100 kHz, with the characteristics of small size and narrow wave beam in the low frequency range.
提出了测量10-100kHz频段水声材料平均横波声速和衰减系数的测量系统，系统具有低频、小尺寸、窄波束的特点。
low attenuation range
相关单词辨析
这组词都有“卑鄙的，卑贱的，卑下的”的意思，其区别是：
mean: 暗示狠毒、贪婪、缺乏尊严感等为人们所不耻的卑鄙、自私、渺小的行为。
shabby: 指行为的不公和卑劣而使人感到不屑和轻蔑。
cheap: 侧旨人或物的品质低劣下贱。
low: 指行为卑鄙、可耻、下文明，可引申指庸俗。
这组词都有“山”的意思，其区别是：
hill: 通常指小的土山、石山或浅丘。有时也指高山，复数表群山。
volcano: 特指主要由喷出的熔岩和火山灰堆积而成的圆锥形火山。
mountain: 通常指比hill高而陡的高山、山岳。但这种区别不是绝对的，“大”与“小”常常是相对而言。
range: 形成的山脉或岭。
mount: 常用于地名之前， 即一般放在专用名词前，书面用词。
peak: 指山峰，也可指山顶。
territory: 领土（的范围）
scope: （处理、研究事物的）范围
range: （种类或变化的）限度，范围，幅度，程度；视力或听力所达到的距离，声音所能传送的距离；（枪、炮、导弹等的）射程
span: 跨度，跨径；（某事物）自始至终的持续时间或期间