One day, while I was playing with my new doll, Miss Sullivan put my big Rag Doll into my lap also, spelled "d-o-l-l" and tried to make me understand that "d-o-l-l" applied to both.

有一天我正在玩一个新娃娃，沙利文小姐把我的大布娃娃也放在我腿上，然后写了“d - o - l - l”这几个字母，她是想让我知道“d - o - l - l”既可以指新娃娃，也可以指旧娃娃。

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Construction, symmetry conditions and equalizer connections of a multiplex double-closed lap winding of the D. C. motor are analyzed in this paper.

本文分析了直流电机双闭路双叠绕组的结构、对称条件和均压连接线。

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