First, this paper illustrates IR and DSpace, show the representative definition of IR, gives an instruction of the function of IR;
给出了具有代表性的机构仓储的定义，说明了机构仓储的功能；
2
The boundary surface and volume expression of 3-D workspace is addressed byenveloping boundary curves of each plane which are obtained by partitioning 3-Dspace into layers.