本文对水中光击穿时所激发的声场的指向特性进行了理论和实验研究。
The Directivity of the sound field generated through the mechanism of the laser-induced liquid breakdown in water is investigated both theoretically and experimentally.
鲸鱼和其他海洋哺乳动物，鱼类甚至一些无脊椎动物依靠声音，声音在水中传播要比光快。
Whales and other Marine mammals, fish, and even some invertebrates depend on sound, which travels much farther in water than light does.
但是光同样可以以一种稍缓的速度行驶，比如它会因为在空气中或水中而被减慢速度。
But light can also travel at a more leisurely pace, slowed, for example, by air or water.
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