A concept and implementation as well as several main program fragments of restriction technique of gravitationfield are given.
给出了引力场约束技术的一般概念、实现方法，并给出主要程序段。
2
The gravitation between ultra distant objects interacts, with the material wave as its medium. That is the gravitationfield we want to find.
超距离物体之间的引力作用，正是由它（物质波）做媒介进行相互作用的，这也就是我们所要寻找的引力场。
3
The universal gravitationfield is described by imaginary number in the paper. It's energy density is negative real number. And it accord with conservation of energy.