说明：  华为、上海贝尔、台湾神达电脑的电路板PCB布线的规范，对跨入电路板硬件设计领域是一个捷径，养成良好的布局布线习惯将受益无穷啊，三家公司的布线规范供你参考
(Huawei, Shanghai Bell, Taiwan Mitac computer circuit board PCB routing rules, on the threshold of the circuit board hardware design area is a shortcut, to develop good habits will benefit from placement and routing infinite ah, the three companies wiring specification for your reference)