传统教学往往注重讲解教学,而动手实验操作在实际教学中起着重要作用,把握操作时机,加强操作指导和操作后的利用率,是提高操作性的有效手段。 Traditional teaching often focuses on teaching, and hands-on experimental teaching plays an important role in practical teaching. It is an effective measure to improve the operability by grasping the timing of operation and enhancing the utilization of operational instruction and operation.