生产者 、 消费者、分解者之间周而复始的不断循环着.There exists an continuous cycle among those producers, consumers and decomposers.分解者:主要指细菌、真菌等.The matter cycle implies that the natrual ecosystem never produces garbage.分解者 —— 这将给你的根除者提供一架近程 反...
Methods: Gated SPECT ( G - SPECT ) and rest equilibrium radionuclide angiocardiography ( ERNA ) were performed on 42 normal cases within 1 w.方法: 42例正常人,在行门控心肌断层显像 ( G - SPECT ) 后1周内行平衡法核素心室造影 ( ERNA).All the patients und...