1.90度走线，直角处容易断裂；2.线距太小，容易短路；3.线宽过细，

1. 90-degree wiring, easy to break at right angles; <br>2. Too small line spacing, easy to short circuit; <br>3. Line width is too thin, too long, easy to break under force; <br>4. Wiring is too close to the edge of the board, easy to be impacted or sub-board force Cause a break

1.90 degree line, right angle easy to break;<br>2. Line distance is too small, easy to short-circuit;<br>3. The line width is too thin, too long, the force is easy to break;<br>4. The wiring is too close to the edge of the board and is vulnerable to collision or plate force leading to fracture;

1.90 degree, easy to break at right angle;<br>2. The line distance is too small to short circuit easily;<br>3. The line width is too thin and too long, so it is easy to break under stress;<br>4. The wiring is too close to the edge of the board, so it is easy to be broken due to collision or split board stress;<br>