单语范例（未经PONS编辑处理）
英语
- Typical values for P-wave velocity in earthquakes are in the range 5 to 8 km/s.en.wikipedia.org
- This method uses regular P-wave and simple refraction acquisition equipment, and does not require an active source, hence the name.en.wikipedia.org
- As a result, a P-wave is observed.en.wikipedia.org
- At the surface it reflects as a P-wave.en.wikipedia.org
- After periods of memory training, P-wave density increases during subsequent sleep periods in rats.en.wikipedia.org
- In cases where animals display unusual behavior some tens of seconds prior to a quake, it has been suggested they are responding to the P-wave.en.wikipedia.org
- As a result, there is a P-wave shadow zone between 103 and 142 from the earthquake's focus, where the initial P-waves are not registered on seismometers.en.wikipedia.org
- P-wave velocities are much slower in the outer core than in the deep mantle while S-waves do not exist at all in the liquid portion of the core.en.wikipedia.org
- The inversion algorithm works by first estimating angle-dependent P-wave reflectivities for the input-partial stacks.en.wikipedia.org
- P-wave superconductivity was observed previously in strontium ruthenate, but the crystalline structure of this matter proved to be too bulky to provide a good specimen.thevarsity.ca
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