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词汇 Secondary waves
分类 英语词汇 英语翻译词典
释义

Secondary waves

原声例句
大英百科全书

Next come the S, or " secondary, " waves.

接下来是 S 波，或“横波”。

英语百科

S-wave

Plane shear wave
Propagation of a spherical S-wave in a 2d grid (empirical model)
The shadow zone of a P-wave. S-waves don't penetrate the outer core, so they're shadowed everywhere more than 104° away from the epicenter (from USGS)

S-waves, secondary waves, or shear waves (sometimes called an elastic S-wave) are a type of elastic wave, and are one of the two main types of elastic body waves, so named because they move through the body of an object, unlike surface waves.

The S-wave moves as a shear or transverse wave, so motion is perpendicular to the direction of wave propagation. The wave moves through elastic media, and the main restoring force comes from shear effects. These waves do not diverge, and they obey the continuity equation for incompressible media:
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