作业帮请英语达人帮帮忙! 求这一段话的paraphrase The speed at which light travels varies depending on the substances through which it is passing; light travels more slowly when it passes through a denser substance. Refraction occurs when the di
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请英语达人帮帮忙! 求这一段话的paraphrase The speed at which light travels varies depending on the substances through which it is passing; light travels more slowly when it passes through a denser substance. Refraction occurs when the di
请英语达人帮帮忙! 求这一段话的paraphrase
The speed at which light travels varies depending on the substances through which it is passing; light travels more slowly when it passes through a denser substance. Refraction occurs when the direction in which light is moving changes as it passes at an oblique angle from on substance(medium) to another of a different density (for instance, between water and air, or air and glass). This is caused by a change in the speed of light as it passes across the boundary between the two media.
请英语达人帮帮忙! 求这一段话的paraphrase The speed at which light travels varies depending on the substances through which it is passing; light travels more slowly when it passes through a denser substance. Refraction occurs when the di
光的速度随物质通过是通过更慢,光时气流通过致密物质.时发生折射光的方向移动时变化在倾斜从物质(中)到另一个不同的密度(例如,在水和空气,或空气、玻璃).这是由于改变光的速度是在经过两个媒体之间的界限
在哪个光旅行速度取决于的物质，它通过 ； 当它通过一种高密度物质时，光的传播慢得多。 方向中的光移动的变化，它从一个斜角度对 substance(medium) 到另一个不同的密度 (为例之间传递水和空气，或空气和玻璃） 时，就会发生折射。 由于两种介质之间跨边界传递，这被引起光的速度变化。...
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在哪个光旅行速度取决于的物质，它通过 ； 当它通过一种高密度物质时，光的传播慢得多。 方向中的光移动的变化，它从一个斜角度对 substance(medium) 到另一个不同的密度 (为例之间传递水和空气，或空气和玻璃） 时，就会发生折射。 由于两种介质之间跨边界传递，这被引起光的速度变化。
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depend on
pass through
pass across
a change in