单词:seismic head wave
单词:seismic head wave 相关文章
Passage 20 Waves How does light get from the sun to the earth? How does music get from the stage to the audience? They move the same way in waves! Light and sound are forms of energy. All waves carry energy, but they may carry it differently. Light
Broadcast: May 16, 2003 By George Grow This is the VOA Special English Environment Report. Scientists in the United States have developed a computer program that they say could provide an early warnin
SCIENCE IN THE NEWS - The Ever-Present Threat of Tsunamis BOB DOUGHTY: This is SCIENCE IN THE NEWS in VOA Special English. Im Bob Doughty. FAITH LAPIDUS: And Im Faith Lapidus. This week, we tell about tsunamis -- the deadly sea waves often caused by
broadcast, broadcasting 播送,播放,广播 live broadcast 直接广播,直播 rebroadcast 重播 recorded broadcast, recorded transmission 录音后广播 broadcasting station, transmitter 电台
And the direction the crystals are pointing makes a difference to the speed seismic waves travel through the rock: a wave traveling parallel to the crystalsin other words, along the length of the toothpickmoves faster than a wave traveling in the oth