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When the coil is energized, the iron core attracts the armature and the support plate to move down, and the contact points are turned on or off instantly. The piston rod and the lever slowly decrease due to the influence of the blocking nylon. After a certain period of time, the piston rod decreases to a certain position, and the delayed action contact is pushed by the lever to act, which is in an open state, while the moving contact is closed. The delay time of the relay is the time when the coil is energized until the delay contact completes its action. When the coil is powered off, the relay is restored by the recovery action of the spring.Who are these people and why they died? The police immediately thought of the "Changsheng Wheel" that mysteriously disappeared last month.吴志浩和艾佳佳新婚之际，艾佳佳的幼年好友王坤送来一张古老的婚床，作为新婚贺礼。自此之后，吴志浩与艾佳佳朝无宁日，暮无良夜。日为人间床，夜为阴界棺，一张古老的婚床之下，似乎附身着行走于阴阳两界的怨灵。床下时常隐现着诡异的生灵，夜半时出现的唤魂之音，甚至出现了令人心悸的邪灵鬼爪。异象丛生，怨灵乍现，吴志浩与艾佳佳陷入了一个死亡诅咒之中。邪恶怨灵的步步逼近，身边人的背叛与冷漠，更让了他们走到了独自寻求谜底的孤独绝境、生死的边缘……关于一位东北民间萨满巫师的纪录片周勃解释道：说的不错，正因为子婴是始皇嫡孙，之前的秦王，在秦国子民心中有着崇高的地位。Three items are enough, we don't need any extra ones.