The transmitting probe produces a pulse which causes a P-wave in the normal direction of the plane and a S-wave in its shear direction.
发射探头对岩块法向脉冲后产生纵波，同时在其垂直方向产生横波沿该平面的方向传播。
The central one of the fiber probe is used for transmitting laser beam, the others having same spaces to the center one are used for receiving scattered signal.
在装置中间，其中一根光纤用于传输入射激光，周围多根光纤与中心光纤等间隔，用于接收血液中的散射光。
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