二端元件的一般形式如图1所示。 它是用长方形符号及以A、B为端点的两端理想导电引线来表示的。

A two-terminal element in general form is shown in Figure 1, with a single device represented by the rectangular symbol and two perfectly conducting leads ending at connecting points A and B.

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起初曾对异教神庙或宽敞的建筑物加以改建，同时模仿古罗马长方形大会堂形式建造基督教堂。

At first once performed to the heathenism temple or the spacious building to rebuild, simultaneously the mold in the style of antiquity Rome rectangle meeting hall form constructed the Christ church.

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回到起点，孩童彩笔下的城堡：长方形，坡屋顶，高高的窗子，具有初级的形式和简单的几何形体。

Back-to-basics, child's drawing of a house; rectangular-shape, pitched-roof, high-window, featuring primary-forms and simple-geometry.

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