At the bottom are the physical devices that provide connectivity to the networks (serial or high-speed networks such as Ethernet).

底部是物理设备，提供了对网络的连接能力(串口或诸如以太网之类的高速网络)。

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The plow bottom performance and surface analyses in this paper, will be a reference for high speed plow bottom design and research works.

本文阐述的犁体性能与曲面分析，可供高速犁体设计研究参考。

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The setup in the bottom two photos is an attempt to spin two magnets in rejection in opposite directions enclosed in the cones at high speed.

安装在底部两个照片是企图附带两个磁铁的排斥反应的相反方向封闭的圆筒高速。

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