掺杂质，掺质剂加入纯半导体材料中的少量硼等物质，用于晶体管和二极管中以改变半导体的。

A substance, such as boron, added in small amounts to a pure semiconductor material to alter its conductive properties for use in transistors and diodes.

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最新的晶体管尺寸非常小，在其通道中掺杂只要往硅中注入少量杂质原子，如果这个量掌握得不好，晶体管的正常运行就会受到影响。

The latest devices, though, are so small that doping their channels involves placing just a handful of dopant atoms among the silicon. Get the number wrong, and things will not work properly.

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