电路暗盒中已经预置了学生实验所必需的包括电池、电阻、小灯泡、二极管等电子元件，教师可以通过跳线灵活的进行不同电路或不同元件的搭建和组合；同时，预留了电子元件扩展的空间和线路，便于日后根据需要自行添加，作深入的研究用。Intheelectriccircuitcartridgealreadyinitializedincludingelectroniccomponentsandsoonbatterywhich,resistance,miniaturebulb,diodethestudenttestsmust,theteacherhasbeensiblethroughtojumpthelinenimbletocarryonthedifferentelectriccircuitorthedifferentpartsbuildandthecombination;Atthesametime,hasreservedthespacewhichandthelinetheelectroniccomponentexpands,willbeadvantageousaccordingtowillneedmomentarilyvoluntarilytoincreaseinthefuture,doesthethoroughresearchtouse.
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