The three-dimensionalframe of reference is the realm of definitions, and that is why it is apparently constituted of time and space.
三度空间的思想架构是一个靠定义而存在的世界，因此，它需要时间和空间。
2
The frame construction, the work flow and the threedimensional modelling method of pneumatic rock drill based on virtual prototype technology were elaborated.
Excellent package sculpts is the visual explaining of the three-dimensional space, which based on application of material and the frame of reference of principle and law of beauty.