查询词典 P wave

P-wave: An elastic body wave in which particle motion is in the direction of propagation.

P-波：质点运动方向与波传播方向相同的弹性体波。

The microseism signal automatic recognition system can pick up and analysis P wave 、S wave and the interfering signal in the microseism signal caused by the mining tremor, determine the time of signal arrival and amplitude, energy etc.

矿山微震信号自动识别系统可以对由矿震所引发的微震信号进行拾取并分析P波、S波及干扰信号，确定信号到时及振幅、能量等微震属性，为预测和防治矿震灾害提供了必要参数。

The calculated results indicated central wavelength of impurity mode and whole forbidden band move towards shortwave when incidence angles increase. Remotion of impurity mode of P-wave consist with that of S-wave basically.

研究结果表明，杂质模的中心波长及整个光子禁带随入射角的增加逐渐向短波方向移动，P偏振光和S偏振光的杂质模的移动情况基本一致。

In practice, P-wave velocity can be measured in seismic data. P-modulus contains a part of shear modulus as shown

实践中，P波速度可以从地震数据中得出，P波模量中包含了一部分剪切模量，如下式

Based on them, we calculated precisely some enegy levels of P-wave and D-wave of a helium atom, presented and proved the general interdimensional degeneracies for a quantum N-body system, derived the general spherical spinor functions and the exact solution to the Dirac equation for the hydrogen atom, and proved uniformly the Levinson theorem for the Dirac equation in D-dimensions.

在此基础上，我们精确计算了氦原子P波和D波若干较低能级，建立和证明了量子N体系统不同维数状态间最普遍的简并，推导出任意 D 维空间广义球旋函数和Dirac方程氢原子的精确解，统一地提出和证明了任意 D维空间Dirac方程Levinson定理的一般形式。

Hence, an analysis method of long-spread nonhyperbolic normal-moveout velocity for P-wave in weak transverse media with vertical symmetry axis is illustrated. The quartic term of the Taylor series expansion for t2-x2 curve is used to determine the normal-moveout velocity.

文中阐述了横向各向同性介质中长排列的非双曲线的P波时差速度分析方法，即对P波的旅行时间进行泰勒展开，应用t2～x2的四次方展开项进行时差速度分析。

After QRS detection, the P wave and T wave is detected by the information of the amplitude and slope in certain section. This method works well for normal signals yet it isn't fit for the unmoral signals and diseased signals.

对于P、T波的检测问题，采用在特定区间内通过斜率和幅值加以检测的方法，对正常心电图检测效果较好，但不适用于不规则的和病态心电图。

After QRS detection, the P wave and T wave is detected by the information of the amplitude and slope in certain section. This method works well for normal signals yet it isnt fit for the unmoral signals and diseased signals.

对于P、T波的检测问题，采用在特定区间内通过斜率和幅值加以检测的方法，对正常心电图检测效果较好，但不适用于不规则的和病态心电图。

Based on the spreading mechanism of seismic wave, introduced the locating method and software of microseismic monitoring. The main parameter was arrival time of P wave. The software was written by Matlab.

基于地震波在连续介质中的传播机理，采用P波到达时间为主要指标，编制了基于Matlab语言的定位软件。

The results show when formations contains a single vertical parallel fracture system, the amplitude of reflected P-wave is more sensitive than velocity for different infillings of vertical fractures; the anisotropy increases as fracture density increasing; the anisotropy of gas-bearing fracture is stronger than the fracture saturated with fluid.

研究结果表明，当地层中含有单组垂直的平行裂隙时，反射P波振幅对垂直裂隙中充填物的敏感性大于速度对裂隙中充填物的敏感性，随着裂隙密度的增加，P波各向异性程度也相应增强，裂隙中含气时，各向异性程度较含饱和水时强。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。