震源

The focal mechanism at 8.9 km: the nodal planes Ⅰ, the nodal planes Ⅰ: strike 213°, dip 76°, slip -21°; the nodal planes Ⅱ: strike 308°, dip 70°, slip -165°; T-axis: azimuth 261°, plunge 4°; P-axis: azimuth 169°, plunge 24°.

震源深度为8.9km的地震，其节面Ⅰ参数为：走向213°，倾角76°，滑动角-21°；其节面Ⅱ参数为：走向308°，倾角70°，滑动角-165°T轴方位角：261°，倾角：4°；P轴方位角：169°，倾角：24°。

It is deduced in this paper theoretically the elastic wave equation in two dimen-sional EDA media, for which numerical modeling is carried out.

中文摘要：本文从理论上推导了二维EDA介质中的弹性波动方程，并对其进行了数值模拟，获得了当坐标系旋转30°时用点源激发的三分量波场切片及用相互正交的横波震源在同一位置激发，用两个相互正交的水平检波器接收的四分量全成记录。

Our results demonstrate that the symmetric and asymmetric variations above the incident azimuths appear on the radial and transverse components of the receiver function, respectively.

结果表明，当台站下方存在倾向一致的倾斜界面时，远震体波接收函数的径向分量和切向分量分别随震源方位角的变化呈现对称和反对称的规律性变化。

Orthogonal subset is extracted from orthogonal geometry by collecting all traces that have a shot line and a receiver line in common, therefore the two lines are vertical bisectors. An orthogonal subset is single-fold coverage of a 3-D dataset.

在正交子集中，各种规则干扰，如面波、声波、折射以及由地面不均匀体产生的散射，在三维空间上，形成以震源或散射点为顶点的锥形体，线性噪音为从圆锥顶点辐射出的直线，具有恒定的视速度。

It has been conformed that the products formed during source fracture are actually diversified, and a progressively change from cataclasis to abrasive melting may present during variable source process by geological and experimental studies of the project.

震源过程的地质和实验研究表明，化石地震破裂产物具有实际多样性，从碎裂到摩擦熔融是递进发生的。

The deign and ma chining of the key components of this shock absorber is introduced, including th e surface treatment of the spline mandrel, the design of disc spring and connect ing housing, and the configuration of sealing and bearing.

介绍了该空气机械减震器关键零部件的设计，包括花键心轴的表面处理技术、联接筒体设计、减震源碟形弹簧组合设计、密封及支承设计。

Ioffe Physical-Technical Institute,Russian Academy of Science,came to China and cooperated with the Institute of Geophysics,CSB and the Institute of Geophysics,Scientific Academy of China to carry out the experimental investigation of rock rupture with scale of decimeters in the laboratories of earthquake source physics.

Kuksenko教授等专家应邀来华，与中国地震局地球物理研究所和中国科学院地球物理研究所合作，在震源物理实验室开展分米级尺度岩石破裂实验研究。

Satellite gravity field data recovered by digital global models with 2180 to 2360 order are mainly originated from the density variation in the depth of 1836 km, at which epicenters of most major structure earthquakes were located.

根据2-180阶与2-360阶的数字全球模型恢复的卫星重力场数据，主要源于地下18~36 km深处的密度变化，多数大地震的震源也正是位于该层段。

On the other hand, the S wave velocity structure shows an EW variation, this distribution feature corresponds to the distribution of epicenters and volcanoes, and the strike of faults.

另外，S波速度结构还反映出这一构造格局呈南北向的空间展布，并且与该区地震震源分布、断裂走向、火山分布有很好的对应关系。

He adds,So far,the US financial sector has been the epicentre of the global crisis.

他补充说：目前，美国金融机构是这次金融危机的震源。

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％。