声波

Vortical flow can be produced by the sound wave incident on a small orifice in some circumstances, which results in significant sound absorption.

在一定条件下声波入射在小孔上会激发出涡流，并引起入射声能的高效吸收。

It is discovered through integrating the fractural analysis approach by flexural strength with other methods that the feature of logging facies in effecfire reservoir of Mesozoic vulcanite of the region mainly shows as low density, low neutron, high interval tr...

综合龟裂系数裂缝分析及其他方法发现，该区中生界火山岩有效储集层的测井相特征主要表现为低密度、低中子、高声波时差和高伽马值等特征。

Non-linear harmonic US signals may arise also in tissues themseles due to a distortion of the sound wae during its propagation through the tissue.

非线性的谐波超声信号也可以在组织本身中产生，原因是在组织中传播时声波的变形。

According to seismic wave dynamic mechanics,the reasonable nonlinear mapping relationship between seismic records and log data was established.

摘要根据地震波动力学，建立了地震记录和测井数据间的合理的非线性映射关系，通过获取地震记录的自回归系数、分形维数、最大Lyapunov指数和突变参数，得到了声波时差和地层密度测井曲线，建立了地层弹性参数、强度参数的获取方法。

The number of wave crests and wave troughs of the flame varies regularly with the change of frequences of incoming waves.

火苗的波峰和波谷数目随入射声波的频率改变而有规律的变化。

Cased well ; sound wave ; wave train ; application ; interface ; bond strength

套管井；声波；波列；应用；界面；胶结强度

In this paper, one example from Zhongyuan Oilfield, Wen-33-26 well with long spacing acoustic wave train log is given. The measured ''shear wave velocity was treated as Rayleigh wave velocity. The poisson ratio and Young...

本文以中原油田Wen-33-26井的长源距声波全波列资料为例，将所测得的井下"横波"速度当作瑞利波速度处理，求得的泊松比和杨氏弹性模量值更为合理。

The predicted wave patterns of pressure, velocity, density and temperature agree with classical experimental results quite well.

对二维声波谐振管进行了数值模拟，在小振幅下与线性理论的结果符合良好。

In order to detect four kinds of unusual voices, we extract five features on audio waveform, including the number of segmented parts, duration of waveform, mean of volume, zero crossing rate and correlation. Experimental results show that the detection rate can be up to 94%~97% for these four kinds of unusual voices.

为侦测上述的四种危急声音，我们从声波图上撷取区域内声音区段的数目、波形持续时间、平均音量、正规化零越率和声音区段彼此之间的相关性五种具区别率的特徵为我们侦测之依据。

Using sonic technology, you can effectively remove plaque, gently stimulate your gums and naturally whiten your teeth.

利用声波技术，可以有效地清除牙菌斑，轻轻地刺激你的牙龈和牙齿自然美白。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。