质剂
zhìjì
* акт купли-продажи, торговый контракт
zhì jì
买卖的契据。
周礼.地官.质人:「凡卖儥者质剂焉,大市以质,小市以剂。」
古代贸易券契质和剂的并称。长券叫质,用以购买马牛之属;短券叫剂,用以购买兵器珍异之物。后世的合同本此。
примеры:
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导电率
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.