水滴的直径可微小至一纳米(一米的十亿分之一)。
The water droplets themselves can be as small as a nanometre (a billionth of a metre) across.
作为对比,木星的亮度也只有我们的太阳的十亿分之一。
By comparison, Jupiter is one-billionth the brightness of our sun.
但此设计要求硅片厚度不超过5纳米(一米的十亿分之一)。
But the design requires that this silicon layer be no more than five nanometres (billionths of a metre) deep.
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