A human hair is about 80,000 nanometers thick.
人的头发大约有80000纳米粗。
This was 600 nanometers thick, very, very thin.
大约只有600纳米厚，非常非常薄。
A human hair is about 80, 000 nanometers thick.
人的头发大约有80000纳米粗。
For example: an average human's hair is about 25000 nanometers in diameter.
例如：平均人的头发的直径大约是25000纳米。
And they found that the protective covering is actually only 6 nanometers thick.
他们发现，保护层其实只有6纳米厚。
And they found that the protective covering is actually only 6 nanometers thick.
他们发现，保护层其实只有6纳米厚。
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