The Differentiated Classroom: Responding the Needs of All Learners
The Differentiated Classroom: Responding the Needs of All Learners
复制标题
差异化课堂：满足所有学习者的需求
DOI：
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发表时间：
1999
期刊：
影响因子：
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通讯作者：
C. Tomlinson
中科院分区：
文献类型：
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作者：
C. Tomlinson
一种磁场产生结构，具有一对U形细长芯构件，其中一个芯构件的腿的端面与另一个芯构件的腿的端面以面对关系布置，并跨越预定间隙。每个芯构件上的第一绕组围绕每个芯构件的槽缠绕。一个交流电源被设置成串联地激励两个芯构件上的第一绕组。第二绕组位于每个芯构件上，并且与第一绕组成直角地围绕相应的芯构件缠绕。直流电源被布置成串联地激励芯构件上的第二绕组。
A magnetic field producing structure has a pair of U-shaped elongated core members with the end faces of the legs of one of the core members arranged in a confronting relationship across a predetermined gap with the end faces of the legs of the other one of the core members. A first winding on each of the core members is wrapped around the trough of each of the core members. A source of alternating current is arranged to serially energize the first windings on both of the core members. A second winding is located on each of the core members and is wrapped around the corresponding core member at right angles to the first winding. A direct current source is arranged to serially energize the second windings on the core members.