A-A+ The second electromagnet when energized releas 2022-08-12 10:12:39 问答库 阅读 195 次 问题详情 The second electromagnet,when energized,released the latch allowing the armature to return to its original position. 参考答案 通电后第二块电磁铁就释放弹簧锁，使得电枢能够返回原始位置。
