depletionn.消耗；逐渐耗尽depletion degree衰竭程度depletion factor折耗因素depletion mutant缺失型突变体depletion plasma血浆除去法depletion-moden.耗尽模式depletion models消耗模型depletion assets[经] 递(折)耗资产depletion effect贫乏效应depletion region耗尽区,势垒区,阻挡层depletion period消除期