Employing the oblique projection shifting method , we have solved some graphic problem in descriptive geometry . it is very simple and fruitful to deal with difficult problems in orthographic drawing 摘要介绍了投影变换中的斜投射法及其在解决工程图学一些问题中的应用。用这种方法可解决工程图学中用正投影方法不便解决的图示、图解问题，而且具有应用范围广、作图简便的优点。
