waves include primary wave (P-wave) and secondary wave (S-wave) .
seismic###Seismic
举一反三
- Seismic waves include P wave, S wave, Rayleigh wave and Love wave, of which the fastest is P wave.
- Which type of earthquake wave is a compressional wave? A: P-waves B: surface waves C: long waves D: S-waves
- In a ( ), the oscillations are perpendicular to the direction in which the wave travels. An example is a wave on a string. A: transverse wave B: longitudinal wave
- What kind of wave does ultrasound belong to and has certain radiation? A: Electromagnetic wave B: Mechanical wave C: Particle wave D: Light wave
- The sound wave is (). A: Mechanical transverse wave B: Mechanical longitudinal wave C: Electromagnetic wave D: X<br/>rays.
内容
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wave to/at sb wave goodbye to sb
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驻波 standing wave；stationary wave
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关于波面与波线About Wave Surface and Wave Line A: 波面处处与波线平行；The Wave Surface is parallel to the Wave Line everywhere; B: 波面处处与波线不一定平行；The Wave Surface is not always parallel to the Wave Line; C: 波面处处与波线垂直；The Wave Surface is everywhere perpendicular to the Wave Line; D: 波面处处与波线不一定垂直；The Wave Surface is not always perpendicular to the Wave Line;
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____: n. the rate at which a sound wave, light wave, or radio wave moves up and down 震动频率
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Various researches have determined that the biggest wave load appears when a wave length is _____ the ship’s length.