图中，这两层仅需要终端系统。
In our picture these two layers are needed only on the end systems.
移动终端系统的软硬件设计。
介绍一种智能电话终端系统的设计与实现。
An intelligent telephone design based on MCU was introduced.
设备控制系统采用可编程控制技术及大屏幕控制终端(触摸屏)，整机操作，性能稳定可靠。
Machine control system adopts PLC technology and touch screen, the operation is steady and reliable.
但在一些以小型手持设备为终端的自组网应用系统中物理层无法提供载波感知。
But the physics layer of some small hand-hold equipments can not provide carrier sense.
同时人可以通过手持的PDA终端对整个系统进行管理和调控。
At the same time, people can control and manage the system by using PDA system.
同时人可以通过手持的PDA终端对整个系统进行管理和调控。
At the same time, people can control and manage the system by using PDA system.
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