... Power Line Carrier Digital Communication 电力线载波数字通信技术 line digital output 联机数字输出 Fiber Line Digital Service 光纤数据服务 ...
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The sinking digital output controls the line by using a transistor to leave the line high (at + v) or to ground the line to 0 v.
Sinking数字输出通过三极管来控制连接线上的电平为高电平(+ V)或是低电平(0 V)。
The digital output controls the line by using a transistor to leave the line at 0 V or to raise the line to +V.
Sourcing数字输出通过三极管控制连接线上的高低电平。
On the base of analyzing the character and structure of the point, line, area symbols, a data structure of map symbol base which serves the symbolized output in digital mapping is put forward.
论述了在数字制图环境下地图输出的特点，在分析了地图上点、线、面符号特征和构造原理的基础上，提出了一种用于数字地图符号化输出的地图符号库数据结构。
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