词汇	加倍时间
释义	加倍时间医doubling time
随便看	economic imperatives economic imperialism economic implication economic implications economic improvement economic incentive economic incentive funds economic incentive measures economic incentive principle economic incentives economic incentive system economic incidence economic income economic income of herdsmen economic increase economic increase methods Economic increasing economic increment economic increments economic independance status economic independence economic index economic indexes economic indexes calculation economic index number