Such configurations, obtained theoretically by calculation, are called models of a star.通过理论计算得到的恒星结构称为恒星模型.High ductility and excellent bendability to form bends, loops and complicated configurations without fracture.良好...
Such configurations, obtained theoretically by calculation, are called models of a star.通过理论计算得到的恒星结构称为恒星模型.The other two configurations have overriding advantages for special applications.其它两种接法对特殊应用具有突出的优点.Spiral galax...