When two waves of opposite direction but similar frequency collide, they create a special kind of pressure wave that carries energy to the ocean bottom.

当两方向相反但频率相似的波浪相撞时，会产生一种特殊类型的压力波，而这种压力波会把能量输送到海底。

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The Qiantang River tides appear each year during the eighth month of the lunar calendar, when incoming tides form a huge wave that travels against the direction of the current as the river narrows.

钱塘潮出现在每年农历八月期间，上涨的潮水形成巨大的波浪，随着河流变窄，波浪移动的方向与水流的方向相反。

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So, if instead you put your particle somewhere down here on the electric field, or on the wave, the electric field will now be in the other direction so your particle will be pushed the other way.

还有方向，所以如果，你把粒子放在这下面，电场的方向相反，粒子会朝另一个方向运动。

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So, if instead you put your particle somewhere down here on the electric field, or on the wave, the electric field will now be in the other direction so your particle will be pushed the other way.

还有方向，所以如果,你把粒子放在这下面，电场的方向相反,粒子会朝另一个方向运动。

麻省理工公开课 - 化学原理课程节选

So, what this means is that when we're looking at an actual wave function, we're treating it as a wave, right, so waves can have both magnitude, but they can also have a direction, so they can be either positive or negative.

这意味着,当我们看一个波函数时,我们把它看做一个波，波不仅有幅值，还有方向，所以它们可正可负，如果。

麻省理工公开课 - 化学原理课程节选

Wave direction: direction from which a wave approaches.

UNESCO: L O S S A R Y

Wave refraction: process by which the direction of approach of a wave changes as it moves into shallow water.

UNESCO: L O S S A R Y

Spit: accretionary deposit of sand or stones located where a shoreline changes direction, formed by wave action and joined to the shore at one end only.

UNESCO: L O S S A R Y