【摘要】 对空间抛物线作平行移动时所产生的特殊曲面进行了讨论,并利用较为简易的方法,通过举例总结了部分结论。更多还原

【Abstract】 This thesis contains a discussion of the special surface caused by the parallel translation of space parabola. It arrives at some partial conclusions by giving examples. The author hopes this article will be followed by other writers’more valuable ones.更多还原