The control systems, system s constitution and functions of a monitoring and control system of DC power source screen based on PLC were introduced in the paper.
介绍了一种利用PLC控制的直流电源屏监控系统的控制要求、系统组成及功能等。
With a large, bright screen and inability to remove the battery in the iPhone 4, getting a secondary power source is inevitable if you can't guarantee a power point on your travels.
旅行时没法充电，iPhone4屏幕硕大闪亮，再加上内置电池无法取出，是时候准备一个备用电源了。
With a large, bright screen and inability to remove the battery in the iPhone 4, getting a secondary power source is inevitable if you can't guarantee a power point on your travels.
旅行时没法充电，iPhone4屏幕硕大闪亮，再加上内置电池无法取出，是时候准备一个备用电源了。
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