采用“前臂旋力计”直接测定旋前旋后肌力。结果表明：旋后肌力大于旋前肌力，据此对桡骨体中，下份骨折移位进行了初步探讨，上骨段呈“旋......

Let A=M-N be a regular splitting of an M-matrix. We study the spectral properties of the ineration matrix M-1N. Under a ......