Objective To Validte the Yeliabil of left ventricle ejection fraction ( LEF ) measured by reconstructed impedance cardiography ( RICG ).目的验证重建心阻抗图测量左室射血分数 ( LEF ) 的可靠性.Rapid prototyping manufacturing in the ice pattern i...
Radioactivity is the ejection of particles or radiation from the nucleus.放射性是原子从核中射出粒子或辐射的现象.Most of the crater is formed by ejection.大多数的弹坑是由于把泥土抛出而形成的.A rocket is propelled by the ejection of a portion of its mass to t...