ad in的用法和樣例：
例句
- A material added in small amounts during a chemical or metallurgical process to absorb impurities.
吸氣劑以少量加入化學(xué)或冶金過(guò)程中用來(lái)吸收雜質(zhì)的物質(zhì) - 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.
摻雜質(zhì)，摻質(zhì)劑加入純半導體材料中的少量硼等物質(zhì)，用于晶體管和二極管中以改變半導體的導電率
