很明显，可见的布朗运动与不可见的撞击分子的大小有关。
It is apparent that the visible Brownian motion depends on the size of the invisible bombarding molecules.
反渗透、超滤、微滤之间的基本差别就在于通过膜的分子的大小。
The primary difference between reverse osmosis and ultrafiltration or microfiltration is the size of molecules that can pass through the membrane.
但是，三氧化二氮分子的大小与电特性使它很容易被光线分解成氮和臭氧。
The size and electrical properties of nitrogen trioxide, though, are such that it is easily broken up by light into nitrogen and ozone.
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