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- amplitude attenuation ratio 振幅衰减率
- Amplitude attenuation tomography is based on seismic ray tracing by using linear traveltime interpolation . 模型试算表明:它能对地层的品质因子和Q值异常很好的成像。
- The phenomena of amplitude attenuation and wave_shape aberrance arise from unsteady friction, while the steady friction term cannot reflect these phenomena. 说明非恒定摩阻的存在导致了水击压力波波幅衰减和波形畸变现象 ;而采用恒定状态下的摩阻关系式无法反映这个现象 .
- In order to acquire changes of physicai nature around the focus, this paper has proposed a new physical quantity VFP which was used to study attenuation ratio of train waves before and after 4 great earthquakes. 为了从地震记录图中获取大震前后震源物理性质的变化情况，本文给出了新的物理量VFP，利用该物理量研究了四个大池震前后地震波列的衰减速率变化。
- amplitude attenuation relationship 幅值衰减关系
- After 12 weeks treatment serum Apo-A1 was decreased significantly(P<0.05), the difference in liver-to-spleen attenuation ratio between pretherapy and post-treatment wasn't significant(P>0.05). 治疗12周末时;血清Apo-A1明显降低(P<0.;05);肝/脾CT值比值的差异无显著性(P>0
- negative amplitude attenuation constant 负振幅衰减常数
- Study of Numerical Simulation on Amplitude Attenuation of First Arrivals in Cased-hole Acoustic Logging 套管井声波测井中首波幅度衰减研究
- Analysis on the Primary Cause of Causing Amplitude Attenuation in the Ultrasonic Vibration Cutting after Frequency Tracking 在频率跟踪后引起振动切削过程中振幅衰减的主要原因分析
- Sound waves are measured by their amplitude. 声波是根据其振幅来测量的。
- The amplitude or loudness of a sound. 音量声音的响度或强度
- The ratio of students to teachers is 35:1. 学生和老师的比率是三十五比一。
- The ratio of schoolboys to schoolgirls is 2 to 1. 男学生和女学生的比例是2比1。
- amplitude attenuation 幅度衰减
- Men outnumber women here in the ratio of three to one. 此地男子数量以三比一超过女子。
- The first or last term of a ratio or a series. 首项，末项比率或数列中第一个或最后一个项
- negative amplitude attenuation 负值衰减系数
- By their comprehensiveness and amplitude these picture fille the imagination. 这些照片以其综合性和丰富而充满了想像力。
- After-tax profit margin is the ratio of net income to net sales. 税後利润率指净收入与净销售之比。
- Attenuation of light is in the form of absorption. 光是以吸收的形式衰减。
