attenuation ratio
英 [əˌtenjʊˈeɪʃn ˈreɪʃiəʊ]
美 [əˌtenjʊˈeɪʃn ˈreɪʃioʊ]
衰减比
双语例句
- The experimental result of ultrasonic attenuation using amplitude spectral ratio for the process of rock dilatancy shows there are three processes in that the cracking of rock, crack stability spread, crack instability spread and macroscopical cracking.
利用振幅谱比法对砂岩扩容过程中超声波衰减的实验结果进行分析表明：岩石存在裂纹稳定性传播与裂纹的非稳定性传播和宏观破裂过程； - Inverse Q filter be for stack is based on the attenuation model of Futterman. By correcting phase distortion of wavelet, compensating frequency and amplitude of seismic wave, the resolution of seismic data the signal to noise ratio are improved, and the events are more continuous.
叠前反Q滤波是以FUTTERMAN衰减模型为理论基础，校正地震子波相位拉伸，补偿地震波频率和振幅的损失，达到提高地震资料分辨率和信噪比及改善同相轴连续性的目的。 - In offshore Qinhuangdao, some unfavourable factors such as severe high frequency attenuation, low signal/ noise ratio, weak reflection coefficient, discontinuous seismic event, too big line spacing and so on, restrict the improvement of seismic resolution.
秦皇岛地区存在的高频衰减严重、信噪比低、反射系数弱、同相轴不连续、设计采集线距太大等不利因素制约了分辨率的提高。 - It is bring forward that current attenuation ratio could be used to grade the antisepsis layer in pipe detection when the current detection technique adopts in multipipe.
对于采用多频管中电流检测技术进行管道检测时，提出了利用电流衰减率对管道的防腐层进行分级的方法。 - Attenuation ratio of train waves before and after a great earthquake
大震前后地震波列的衰减速率特征 - The results indicate that under yield points the attenuation, Young's modulus, Poisson's ratio and velocities of saturated rocks all display obvious anisotropy and rather apparent strain amplitude effect and frequency effect.
在最大载荷低于岩石的屈服点时，获得的衰减、杨氏模量、泊松比、波速都表现出显著的各向异性，同时它们还具有较明显的应变振幅效应和频率效应。 - According to the theoretical model given in reference 1, the radii of curvature R, and effect of the radii of various optical fibers on the optical attenuation ratio were calculated and the relative transmission T were deduced.
本文按照文献[1]所提供的理论模型，计算了各类光纤（塑料、石英、玻璃光纤）的弯曲半径R，光纤半径a对光纤传感器的光衰减率γ或光相对传输率T的影响。 - The Lamb wave generated by the optimal signal has the lowest energy attenuation ratio and the highest damage sensitivity, so it is more suitable for damage detection.
同时，激发出的Lamb波具有最低的能量衰减和最高的损伤灵敏度，响应信号特征明显，便于损伤识别。 - Study of Au to-Attenuation System for Measuring Extinction Ratio
测试消光比的衰减系统研究 - Based on the attenuation and phase shifting as function of propagation range of underwater electromagnetic wave, the new ranging method with the phase ratio picked out from receiving signals is proposed.
基于电磁波在海水中传播时产生的传播衰减和传播相移随距离变化的对应关系，提出了将接收的电磁信号的幅度与相位分离处理后利用相位特征量进行比相测距的新方法。 - Field work parameters. practice shows that f-k spectra provide quantitative basis for the analysis attenuation of seismic noise, and are hence of some referential value in guiding field collection and data processing as well as raising the signal-to-noise ratio and resolution ratio of seismic data.
实践证明，f－k谱为分析和衰减地震噪声提供了定量的依据，对指导野外采集和资料处理，提高地震资料的信噪比和分辨率有一定的参考价值。 - The attenuation at dryness and saturation and the attenuation law from dryness to saturation are the same as those by spectral ratio method, but amplitude of the peak attenuation is different.
此方法求出的Q和频谱比法求出的Q在干燥或饱水时基本相同，随饱和度的变化规律也基本一致，但衰减峰的大小有差异。 - The experimental result proves that the application of the random noise attenuation technique to VSP data processing obviously improves signal-noise ratio and first break pickup.
试验结果证实，将随机噪声衰减技术用于VSP资料处理，可以有效地提高信噪比，改善初至拾取的精度。 - In order to ensure safety and reliability the design of HF channels has adopted the phase-to-phase coupling mode for 2 phase and ground combined devices. After measurement their attenuation and signal-to noise ratio and other technical indexes have met the requirements for protection and communication.
在高频通道的设计上，为了保证安全可靠，采用2个相地结合设备的相间耦合方式，经测试，衰减和信噪比等各项技术指标满足通信和保护的要求。 - The attenuation properties of stress wave are also investigated with the aid of the pulse transmission-amplitude ratio method, and this then gives the quality factor.
同时，通过单轴压缩试验确定了抗压强度、弹性模量和泊松比，并运用频谱振幅比法对应力波衰减特性进行了研究，给出了品质因子。 - On the basis of analyzing synthetically current measure methods of milk components, we put forward a method to measure milk component by combining ultrasonic velocity, attenuation coefficient and conductance ratio, and expounded the composing of instrument in detail.
在综合分析当前牛乳成分检测方法的基础上，提出一种应用超声波声速、衰减系数和电导率相结合，检测牛乳主要成分浓度的方法，详细阐述了基于该方法的仪器构成。 - The section of attenuation or attenuation ratio for multi-component data can distinguish from gas/ liquid.
用多分量衰减系数或衰减比剖面，能够识别砂岩含气/水产生所产生的高频衰减异常。 - Reasonably chose geophone planting coupling mode and geophone array parameters by researching the rules of stratum attenuation and absorption, then improved resolution and S/ N ratio.
通过研究地层吸收和衰减规律，合理选择检波器的埋置方式和组合参数，以提高记录的分辨率和信噪比； - The characteristics of sensor signals are extracted using Hilbert-Huang transform and Hilbert spectrum. Based on the Hilbert spectrum, two criteria for the energy attenuation ratio and the damage sensitivity of Lamb wave propagating in the structure are defined and used to optimize the excitation signal experimentally.
利用Hilbert-Huang变换及Hilbert谱提取传感器信号特征，提出了Lamb波信号在结构中传播时的能量衰减率和损伤敏感度两个考察指标，并据此对激励信号进行优化。 - A new model is developed for the computation of rain specific attenuation from rain volume reflectivity, for frequencies from 1 GHz to 100 GHz, and the radar equation, maximum range and signal-to-noise ratio and signal-to-clutter ratio in rain have also been analyzed herein.
文中拟合得到了由降雨的雷达体反射率反演雨衰减率的公式，适用频率1~100GHz，并且给出了降雨存在时的雷达方程、最大作用距离以及雷达接收信号信噪比与信杂比的变化。 - Microwave attenuation technique is used to measure water phase fraction. Capacitance transducer is used to measure oil/ water ratio.
微波衰减测量技术被用来测量三相流总流的含水量，电容传感器测出其中的油、水比率。 - Study on ultrasonic attenuation in the process of rock dilatancy by amplitude spectrum ratio
砂岩扩容过程中超声波衰减的实验研究 - Forty-six cases of SPN with pathological and ( or) clinical results were studied with dynamic helical CT scan. Pre-and post-contrast attenuation, peak height of time-attenuation curve, and ratio of peak height of the SPN to that of the large artery were evaluated.
并对其中46例经病理及临床证实的SPN的CT动态增强特点进行评价，评估其增强前后的CT值、强化峰值、SPN与主动脉的强化值比。 - As strain amplitude increases, the attenuation increases linearly, while Young's modulus and Poisson's ratio decrease approximately linearly.
随着应变振幅的增大，衰减近似呈线性增长，杨氏模量和泊松比近似呈线性下降。 - With an application of the microwave amount attenuation principle to the use of the microwave ratio method, a pocket microwave tester is manufactured to carry out the spot measurement of the water content in the meat stuff briefly by sampling.
采用微波功率比法进行微波衰减量测量原理，制成一种可现场对样品迅速完成计测的便携式肉类含水量测试仪。 - How to determine dynamic parameters of dam materials ( including maximum dynamic shear modulus, the attenuation regularity of modulus ratio with dynamic strain and the growth regularity of damping ratio with dynamic strain) and liquefaction resistance are keys to realize liquefaction evaluation.
坝壳料动力参数（包括最大动剪模量、模量比随动应变衰减以及阻尼比随动应变增长的规律）的确定以及抗液化强度的确定是实现液化评估的关键。