P波
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P waves P波
Plane P waves 平面P波
plane p-waves 平面p波
p waves recognition p波识别
Accompanying p-waves 伴随纵波
long-period p-waves 长周期p波
p waves and s waves 纵波与横波
p waves power spectrum p波频谱
first motion of P-waves P波初动
·2,447,543篇论文数据，部分数据来源于NoteExpress
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Secondary waves travel more slowly and arrive after the P-waves.
次要波传播的更慢，发生在P波之后。
Earthquakes begin with tremors called P-waves that have short wavelengths and generally do little damage; they may not even be felt by humans.
地震从称为P -波的震动开始，P -波波长短，一般很少损害；人们甚至感觉不到。
Japan's Meteorological Agency is currently testing a prototype system which detects the oh-so-subtle "P Waves" that precede the destructive "S Waves, " and alerts major operations to halt their hustle and take cover.
ENGADGET: Japan Meteorological Agency develops earthquake warning system
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