S wave represents the last phase of ventricular depolarization at the base of the heart.

S波代表心脏底部心室去极化的最后阶段。

You see, these studies revealed that these vibrations were of two types: compression or P waves and shear or S waves.

你看，这些研究显示这些震动是两种类型：涨缩波或者说P波和畸变波或者说S波。

In contrast, if infarction occurs under leads in which the QRS complex ends with an S wave, the S wave may disappear.

相反，如果梗死发生在QRS波以S波结束的导联下，S波可能消失。

S waves, while slower, move the ground up, down, and side-to-side, perpendicular to the direction of the wave, causing great amounts of damage.

S 波虽然速度较慢，但​​会垂直于波的方向向上、向下和左右移动地面，造成大量伤害。

So the p wave and the s wave, and the different phases that move out from the site of rupture in the earth, are used by seismologists to locate the event.

地震学家用纵波、横波以及地球破裂部位移出的不同阶段来定位地震发生地点。

On the other hand, S waves either disappeared or were reflected back, so he concluded that the depth marked the boundary between a solid mantle and a liquid core.

另一方面，S波要么消失，或者被反射，所以他推断这个深度标示了固态地幔和液态地核的界限。