Each layer is discussed next.

下面将对每个层进行讨论。

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Limitations: Depends on efficiency of each layer.

限制：取决于每个层次的效率。

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Within each layer, there is a user authorization challenge.

在每一层中都存在一个用户身份验证难题。

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In each layer, electrons exist at a different level of energy, determined by the layer's thickness.

ECONOMIST: Lasers

Now each layer of plastic is as thin as a sheet of copy paper, resulting in smooth printed prototypes.

ENGADGET: MakerBot unveils Replicator 2, 2X and launches retail store, we go eyes-on

The FCC team found that stacking the coatings one on top of another enhanced the anti-reflective properties of each layer.

CNN: New nano coating boosts solar efficiency