| 释义 |
decay/diˈkei/ v. & n.●v. 1a intr. rot, decompose 腐朽；腐烂 b tr. cause to rot or decompose 使腐朽，使腐烂 2 intr. & tr. decline or cause to decline in quality, power, wealth, energy, beauty, etc. (在品质、权力、财富、精力、美貌等方面)衰减，衰退 3 intr. Physics 【物理学】a (usu. foll. by 通常后跟 to) (of a substance etc.) undergo change by radioactivity (物质等经过放射性)衰变 b undergo a gradual decrease in magnitude of a physical quantity 衰弱 ●n. 1 a rotten or ruinous state; a process of wasting away 腐朽；衰亡；衰微；衰败 2 decline in health, quality, etc. (健康、品质等)衰弱；衰退 3 Physics 【物理学】a change into another substance etc. by radioactivity 衰变(成另一物质等) b a decrease in the magnitude of a physical quantity, esp. the intensity of radiation or amplitude of oscillation (尤指辐射强度或振幅的)衰减 4 decayed tissue 腐烂组织 [Middle English via Old French decair from Romanic (as DE-, Latin cadere ‘fall’)] |