这些服务器是网络中专门用于存储的单元，没有键盘或显示器，通过网络控制和配置它们。
These are dedicated units for storage in a network without keyboard or display and are controlled and configured over the network.
该装置由水滴速度测试系统、滴速控制系统、显示装置、单片机系统、键盘和报警等系统组成。光电传感器用来测量液体滴速，利用步进电动机的转速来控制点滴速度，显示装置利用液晶显示器。
The apparatus constitutes the system of testing the liquid drop speed, the system of controlling the liquid dropping speed, LCD display system, MCS-51 system, the key board and alarming system.
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