1. An element introduced into a semiconductor with a negative valence greater than that of the pure semiconductor. 
   施主放进半导体中的元素，其负价大于纯半导体
2. A circuit consisting of two or more semiconductor wafers, each containing a single element. 
   一种由两个或多个半导体晶［圆］片组成的电路，每个晶片包含一个单独的元件。
3. a tetravalent nonmetallic element; next to oxygen it is the most abundant element in the earth's crust; occurs in clay and feldspar and granite and quartz and sand; used as a semiconductor in transistors. 
   一种四价非金属元素，地壳中含量仅次于氧，见于粘土、长石、石英和沙中，在晶体管中用作半导体。
4. a brittle silver-white metalloid element that is related to selenium and sulfur; it is used in alloys and as a semiconductor; occurs mainly as tellurides in ores of copper and nickel and silver and gold. 
   一种脆的、银白色非金属元素，与硒和硫有关联，用于合金及作半导体，主要作为碲化物存在于铜、镍、银、金矿石中。
5. electron beam semiconductor device 
   电子束半导体器件

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