decayedadj.腐败的；被蛀的动词decay的过去式和过去分词形式.decayv.(使)衰退；(使)腐败；(使)腐烂n.衰退；腐烂；腐败decay prevention防朽decay of activity[化] 活性衰减decayof amplitude振幅的衰减decay instability衰变不稳定性decay mining area衰老矿区decay probability衰变概率decaying exponent铁电超晶格decay oscillation衰变振荡Decaying constant衰减指数Decay development腐烂