电路图是用特定的符号表示电路各组成元件连接情况的示意图.同学们在画电路图时应特别注意以下几点.一、画电路图之前应认真观察电路,正确分析电路的串、并联情况后再动笔.二、熟记电路图中常用的符号,电路图中的电器元件要按规定的符号画出来,不能画实物图,更不能随意乱画.如, The circuit diagram is a schematic diagram showing the connection of each component of the circuit with a specific symbol. Students should pay particular attention to the following points when drawing a circuit diagram. First, carefully observe the circuit before drawing the circuit diagram, and correctly analyze the string and parallel conditions of the circuit before moving the pen. Second, to memorize the commonly used symbols in the circuit diagram, the electrical components in the circuit diagram should be drawn in accordance with the prescribed symbol, you can not draw physical maps, but can not randomly doodle.