| 释义 |
primary wave
primary wave An earthquake wave in which rock particles vibrate parallel to the direction of wave travel. Primary waves can travel through both solids and liquids. Also called P wave. See Note at earthquake.
primary wave
primary wave[′prī‚mer·ē ′wāv] (communications) A radio wave traveling by a direct path, as contrasted with skips. (geophysics) The first seismic wave that reaches a station from an earthquake. |