There are quite a few factors affecting acoustic amplitude log in CBM well cementing,such as larger change of strata hardness,uneven casing inside diameter or thickness,instrument out of alignment,insufficient transmitting energy and insufficient receiving sensitiveness etc.
影响煤层气固井声幅测井的因素较多,如地层软硬变化大、套管内径或壁厚不均、仪器不居中、发射能量不足、接收灵敏度不够等,这些因素的存在将会导致首波丢失、时差曲线产生周波跳跃或波动现象。
On the basis of quadrature theory and dynamic characteristics,the amplitude detection and control theory for HRG(hemispherical resonator gyro) is studied in this paper.
基于正交理论和半球谐振陀螺的动力学分析,研究了半球谐振陀螺的振幅检测和控制原理。
amplitude calibration unit
振幅校准器振幅测量器
eddy-current displacement vibration amplitude measuring instrument
电涡流式位移振幅测量仪
Division-of-amplitude photopolarimeter based on LABVIEW
基于LABVIEW的分振幅光偏振态测量系统
The measurement method of amplitude permeability of soft magnetic alloys
GB/T5026-1985软磁合金振幅磁导率测量方法
Sound waves are measured by their amplitude.
声波是根据其振幅来测量的.
Study on the Technique for Measuring the Polarization State of Light Based on Division of Amplitude Method;
基于振幅分割的光偏振测量技术的研究
With the help of instrument, amplitude, acceleration and right number will display.
如需看出振幅、加速度、正确数字需另购测量仪。
Noncontact measurement technology for vibration detection of distant object
物体振动幅度的远距离非接触测量技术
Measurement uncertainty of magnitude and phase shift for sensitivity of a low frequency vibration transducer with amplifier
低频振动传感器幅值和相移测量的不确定度
Design for a device of measuring acceleration derivatives of heave oscillation at high swing in low speed wind tunnel
低速风洞大振幅升沉振动加速度导数测量装置的设计
meters for measuring amplitude by a reading microscope
读数显微镜测振幅法
"The RF Vector Voltmeter-An Important New Instrument for Amplitude and Phase Measurements from 1 MHz to 1000 MHz"
测量振幅和相位用的1兆赫到1000兆赫的射频向量电压表
Therefore, scientists can figure out the strength of a wave that passed through by measuring the size of the vibration.
因此，科学家们能够通过测量振动的幅度来得到引力波的强度。
Application of Micro-Computer to Improve Measurement Accuracy of The Amplitude Attenuation in Pendulum
应用微型计算机提高摆的振幅衰减测量精度(英文)
X-ray quantometer
X射线幅射强度测量计
Investigation on the Evaluation of Oscillatory Potentials(OPS) of ERG
视网膜电图振荡电位的振幅测定方法的探讨
The maximum absolute value of a periodically varying quantity.
振幅周期性变量的最大绝对值
The total energy E is closely related to the amplitude A of the motion.
总能量E和运动的振幅A密切相关。