At the last of this thesis,it summarizes some apocalypses of the 20/80 law as to forming an enterprise s core competition,such as forming core technology and products,differential service and loyal customer management,and focus on the core personnel in an enterprise.

Capacity of a backbone wireless mesh network using directional antennas;

On the Training of the Swimming Backbone in the Army;

The key enterprises are the principal part to promote the circulative economy,and it is an inevitable choice to exploit their advantages to the full in the development of circulative economy in the Upper Reaches in Zhujiang River.

Through study on the present practical difficulties and its occurring reasons in the geological exploration units, this paper hold that the geological exploration units should bring the superiority of the talent and technic into full play, and it emphasizes that build up stable key enterprises with the aim of the establish its position in socialist market economy.

The Application of Comprehensively Clinical Pathway in the Treatment of the Patients Suffered from Femoral Shaft Fractures;

Objective To investigate the clinical effects of inter-locking intramedullary nail in the treatment of multiple long comminuted fracture of femoral shaft.

Methods Femoral shaft fracture is very often main musculo-skeletal injury in polytrauma patient.