sorting phase造句

I have a few hundred million items to sort on a multicore 64-bit x86 computer with several GB of ram ( the internal sorting phase of a much larger external merge / sort ).
In the depth sorting phase of hidden surface removal, if two polygons have no overlapping "'extents "'or extreme minimum and maximum values in the x, y, and z directions, then they can be easily sorted.
It's difficult to find sorting phase in a sentence. 用sorting phase造句挺难的