阈（閾）yù ❶ [书] （门坎儿） threshold; doorsill
❷ (界限； 范围) threshold: 发射 ～ emission threshold; 干扰 ～ interference threshold; 视 [痛] ～ visual [pain] threshold
◆阈电流 threshold current; 阈电压 {核} starting voltage; threshold voltage; 阈量 threshold dosage; threshold dose; 阈能 {核} threshold energy; 阈限 {心理} threshold ; 阈值 threshold; threshold value |