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Be扎sonl220数控绘嘲机多方位绘图形圈索予程j子设汁………………………………裂纹构件的临界载衙……………………………………………………………………四点弯曲复合型断裂理论与实验的研究…………………………………… 胡世凤自行车菱形车架的强度研究…………………………
Be Zha sonl220 NC-mimicry machine draw a multi-directional graphical coil to Cheng j sub-juice .................................... Crack components of the critical carrying Ya ....................................... ....................................... Study on Theoretical and Experimental Study of Four-Point Bending Compound Fracture .............................................. Hu Shih-Feng Research on Strength of Rhombic Frame for Bicycle ............ ..................