气体压强与流速的关系即:气流流速大的地方气体压强小;气流流速小的地方气体压强大.该规律是初中物理教材中的重要内容,在生活、生产中更有重要应用,如飞机、鸟类等飞行时升力的产生原因,体育运动中球类作弧圈运动的原因等等,都要用到该规律.所以该节课是理论联系实际的好课,应 The relationship between the gas pressure and the flow velocity is: where the gas flow velocity is large, the gas pressure is small; where the gas flow velocity is small, the gas pressure is strong. This law is an important content in junior middle school physics textbooks, and is more important in life and production, such as aircraft, Reasons for the lift of birds, such as flying, the reasons for making balls in sports for the reason of arc motion, etc., must be used in this law. Therefore, this class is a good lesson in theory and practice.