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笔者用半线框代替线圈,不用额外的断续通电装置,实现了半线框在安培力作用下的持续振荡,制作成半线框电磁秋千,并讨论了半线框秋千持续振荡的原理.
The author replaces the coil with the semi-wire frame, and does not need the extra intermittent energization device to realize the continuous oscillation of the semi-wire frame under the action of ampere force. The semi-wire frame electromagnetic swing is made and the principle of the continuous oscillation of the half-wire frame swing is discussed.