Development of the AutoCAD Tools on Integrate
xie tancheng; xu ruyi; duan mingde; qu bo( dep. of mech. & electr. eng.; luoyang lust. of technol.; luoyang 471039; china)( china first tractor co.ltd.; luoyang 471039; china)( no. 1 branch; henan province no. 3 constr. co.; luoyang 471039; china)
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