The model which combined Cobb-Douglas production function, multiple regression model and exponential smoothing model can improve the accuracy of fix and forecast by proper weighs.

通过赋予合理权重，将C-D生产函数模型、多元回归模型和指数平滑模型加权组合。

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Objective to investigate the effect of single arm outer fix frame combined with autogenous bone marrow grafting for opened comminuted fracture at distal tibia and fibula.

目的：探讨单臂外固定架结合自体骨髓移植治疗胫腓骨远端开放性粉碎骨折的疗效。

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