Calyptogen a layer of meristematic cells covering the root apical meristem in some plants (e. g. grasses) that gives rise to and maintains the root cap.

根冠原：在一些植物中覆盖根顶端分生组织的一层具有分生能力的细胞，根冠原可以产生和维持根冠。

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The support of any suitable data link layer protocol, e. g. PPP, Ethernet, etc. , shall not be prevented.

支持所有相匹配的数据链路层协议，例如PPP，以太网等，不应该被阻止。

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Note: When you convert a layer into a smart object, you can no longer edit it directly (e. g., you can't use the Brush Tool to paint on the layer).

注意：当你转换一个图层为智能对象，你就不能再直接编辑它了(举例：你不能用画笔工具在图层上涂抹)。

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Software-defined networks will provide some of this flexibility by separating the control function from data forwarding, but there are additional capabilities emerging, he says, such as intelligent switching of wavelengths, the ability to mix dedicated bandwidth with best-efforts networks, and application layer network traffic optimization, e.g.

FORBES: It's The Year Of The Network