To develop a DAPP,you must first understand what problems the DAPP can solve,and then write a project white paper describing The technical principle and consensus mechanism used by the DAPP.It is too complicated to develop a complete blockchain project from scratch,so at present ...【阅读全文】
解决CATIA软件有些较复杂的曲面体这一问题的方法:就是双击左侧图形树中的命令图标“Loft”,出现“Loft Definition”对话框,选择闭合点所在的曲线,单击右键,在下面出现的菜单中,单击“Create Closing Point”命令,出现一个“Point Definition”对话框,选择“Ratio of Curve Length”或者“Distance on Curve”方式,改变方式下面的比例或者长度数值,输入一个正确的数值,就可以得到所要求的物体模型。【阅读全文】