单词	the index of refraction
释义	the index of refraction 折射率
随便看	heart valve disease Heart valve diseases Heart valve diseases/etiology Heart valve diseases/surgery Heart valve disorder heart valve disorders Heart valve incompetence heart valve insufficiency Heart Valve Prolapse Heart Valve Prolapses heart valve prostbesis Heart valve prosthese heart valve prostheses Heart valve prostheses implantation heart valve prosthesis Heart Valve Prosthesis heart valve prosthesis imphlantation Heart valve prosthesis implantation heart valve prosthesis implatation heart valve prosthesis replacement Heart Valve Protheses Heart Valve Prothesis Heart valve regurgitation Heart valve replacement Heart valve replacement in children