声波

A tripartite array of infrasonic measurement in Changping county of Beijing was arranged using three CSH-1 infrasonic receivers. The infrasonic signals (P-t curve and wave vector) produced by meteor shower from Leo on November 17 in 1998 were observed.

采用三台CSH-1型次声接收器，在北京昌平县布置了一个次声测量三点阵，观测到1998年11月17日狮子座流星雨产生的次声波P-t曲线和波速波向图。

This paper summarizes the study progress on the impending earthquake prediction by Chinese scientists from the method of multi-subject intersection and the internal and external factors coupling. Depending on very hard work during recent years, they get some important signals of predicting impending earthquakes, including the anomalies of infrasonic sound wave, crustal stress, behavior of budgerigars, general geoelectric, geomagnetic, satellite heat infrared and high frequency gravity pulsation.

文章综述了中国科学家从多学科交叉和内外因耦合的科学途径，已在大地震临震信号方面获得了次声波异常、地应力突跳、虎皮鹦鹉跳跃异常、地电和地磁异常、卫星红外异常、重力高频脉冲等临震预测的手段。

Of federal law of Russian Federation " About the weapon " about an interdiction on a turn in territory of Russia of the weapon and other subjects, amazing which action is based on use of electromagnetic light, thermal, infrasonic or ultrasonic und microwave radiation, and which have target parameters the exceeding sizes established in state standards of Russian Federation.

2000年已修订的联邦法律，第六条款&武器&，关于禁止在俄罗斯领土使用这类武器：电磁波，电磁光热，声波，超声波和微波辐射。

As a rule, the abnormal infrasound signal can be detected beyond the magnitude 7 of earthquake in the world.

利用高性能电子计算机和日益完善的信号分析处理技术，找出震前次声波异常信号的内在特征，为以后的地震预报提供重要的参考价值。

In the light of the theoretical technique of wavelet networks, we study the method for inversing the time difference of artificial acoustic wave by using multi-scale decompositon of wavelet from seismic records.

在讨论小波网络理论方法的基础上，研究了利用地震纪录小波多尺度分解属性资料进行虚井声波时差反演的技术方法。

Acoustic logging ; System error ; Key horizon ; Oil shale ; Log data

声波测井；系统偏差；标准层；油页岩；测井数据；分析刻度模式

Ultrasonics: Vibrational or stress waves in elastic media that have a frequency above 20 kilohertz, the highest frequency of sound waves that can be detected by the human ear.

超音波：弹性介质中的应力波，其频率在2万赫以上，最高频率超出人耳可听闻的声波频率。

Ultrasonics: Vibrational or stress wave s in elastic media that have a frequency above 20 kilohertz, the highest frequency of sound wave s that can be detected by the human ear.

超音波：弹性介质中的应力波，其频率在2万赫以上，最高频率超出人耳可听闻的声波频率。

Aggregates larger than 10 μm were observed in scanning electron microscopy photographs.

从扫描电镜照片中可以观察到声波团聚过程中产生了粒径大于10 μm的链状团聚体。

It occurs with any type of wave, including sound waves, water waves, electromagnetic waves such as light and radio waves, and matter displaying wave-like properties according to the wavearticle duality.

衍射发生在任何形式的波上，包括声波，水波，电波以及光波，表现出来的波浪形的特性都遵从波粒二象性。

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。