constant current generator meaning in English

定流发电机
恒电流发电机
恒立电机
恒流发电机
直流发电机

The research shows that students misunderstand the relation between force and motion . gravity and action / reaction ; that in dc circuit , students of different age groups have the belief of " consumption of current " , " clashing currents " and " the battery as a constant current generator " ; that in understanding the concepts of electricity students lack th e knowledge of relating the micro with the macro ; and that students have serious difficulties in understanding the propagation of mechanics wave , the speed of wave and superposition , and do not make a distinction between the initial conditions and the medium properties of the system
具体表现在：学生对力和运动的关系、重力和平衡、作用力与反作用力存在一些误解；对直流电路，不同年龄的学生不同程度地存在电流消耗、碰撞电流、恒定电流源等观念，而且对电学概念的理解缺乏宏观与微观的联系；学生在机械波的传播、波速、波的叠加上存在严重的困难，对于机械波的传播学生不能区分初始条件和媒质特性，并错误地将动力学某些观念与机械波进行类比。