6Mukund R. Wind and Solar Power Systems Design, Analysis, and Operation[ M ]. China Machine Press,2009.
7Paolo G. Technology and International Competitiveness [ J ]. Structural Change and Economic Dynamics, 2005, (16) :489 -502.
8Zantek P F, Wright G P, Plante R D, et al. Process and Product Improvement in Manufacturing Systems with Correlated Stages [ J ]. Management Science, 2002, 48 (5) : 591 -606.
