此程序为cad下lisp开发,具有在保持图块不打开的状态下复制其中的对象-procedure for predicting lisp under development, is not maintaining the block open state in which the object replication

EWDraw 3D is a powerful vector graphics ActiveX for 3D and 2D visualisation and animation. You can use it for CAD,CAM,GIS and others. The EWDraw is based on Open CASCADE geometric kernel and openGL. The component is realized as a run-time Windows 3

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