infrasonic

The measurement of time the measurement of infrasonic wave from a long distance artificial explosion

一次人工爆破在远距离产生次声波的测量

Infrasonic wave is commonly found in a variety of industry, transportation, nature and living environment.

次声波普遍存在于工业、交通、自然及生活环境中。

Audiometric zero level at infrasonic frequencies

次声频段的听力零级

In recent decades, the detection of infrasound has been made some progress, and some of excellent infrasonic wave sensors have been developed. However, there are some problems.

近几十年来，对次声波的检测取得了一定的成就，研制出了一些性能优良的次声波传感器，但也存在一些问题。

On the basis of principle of interference phase control, infrasonic sound is again forced to have converged directioned propagation. Thus the two key problems of infrasonic weapon is solved, and a controllable nonlethal weapon becomes possible.

又依相位控制干涉原理，使次声聚束定向传播，从而解决了次声武器的两个技术关键，使可控非致命次声武器成为可行。

Infrasonic observation of meteor shower from Leo on November 17, 1998

1998年11月17日狮子座流星雨的次声观测

Infrasonic observations of open ocean swells in the Pacific: Deciphering the song of the sea.

在太平洋里大洋涌(长浪)次声观测: 译解海地歌曲.

Firstly the louder the heard thunder is, the stronger the amplitude of the infrasonic wave of thunder;

其一是听到雷声越响时，雷次声振幅越强；

Mechanism discussion and Measurements of the Precursory Infrasonic Wave of Strong Earthquake in January of 2001

2001年1月强震的前兆次声波测量及机理探讨

When an infrasonic wave is received by an acoustic array, the time delays of the different modes on the array are also different.

当由一个声学阵接收次声波时，不同的简正波在声阵上产生不相同的时间延迟。

Infrasonic acoustic radiation weapons;

次声辐射武器；

Infrasonic stimulation induced Fos expression in medullary catecholaminergic neurons in rats

次声刺激诱导大鼠延髓内儿茶酚胺能神经元FOS的表达

The Mechanism Research of Blowing Away Dust and Removing Caking Slag in Boiler by Infrasonic Sound Pressure Wave

锅炉应用次声压力波吹灰除焦的机理研究

measurements of the three-dimensional dynamic frequency spectrum of infrasonic waves from thundershowers

雷雨次声波的三维动态频谱测量研究

Nonlethal infrasonic weapon for on-site control

现场可控非致命的次声武器研究

Another haunted and related natural phenomenon is known as frequency infrasonic sound waves.

另一种与闹鬼相关的自然现象是称作次声的低频声波.

In addition, a new type of infrasonic wave generator has been designed and an infrasonic wave acoustic data acquisition system has been set up.

此外，还研制了次声波发生器，并搭建了次声波数据采集系统。

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

采用三台CSH－1型次声接收器，在北京昌平区布置了一个次声测量三点阵，并观测到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。

Discussion on Application of Infrasonic Wave to Tsunami Disaster Warnings

次声波在海啸灾害预警中的应用探讨

According to the characteristics of infrasonic sound effect on human body, the principle of nonlethal infrasonic weapon for on site control is put forward.

根据次声对人体作用的特点，提出了现场可控非致命次声武器的概念。

Since the inhomogeneity in the atmosphere, an infrasonic wave consists of different normal modes, of different phase and group velocities.

由于大气层的不均匀性，次声波分解成不同的简正方式来传播，它们有各自的相速度和群速度。

The equation of infrasonic wave taking into account the gravitational effect in moving media is derived, with multi-layer atmospheric model.

本文推导了计及重力效应运动媒质中的次声波动方程和用速度的散度表示的分层大气模型下的频散方程；

Such as, though capacitive infrasonic wave sensors have been made some progress, its normal work might be affected by vulnerable to additional losses in the high temperature.

例如电容式次声波传感器研究已经取得一定的进展，然而在高温、高湿及高激励的条件下检测结果会受影响。