Firstly according to radiation theory the boundary function of planar diffraction body is given, based on this condition the Kirchhoff diffraction formula is deduced and obtained.
根据辐射理论重新设定了平面衍射物的边界函数，并以此条件推导了基尔霍夫衍射公式，并赋予新的含义。
2
In this paper the author makes one body out of the geoditic network and GPS network rational join by the mode of planar similar transformation.
文中主要讨论采用平面相似变换的方法，使地面网与GPS网较合理地连接成一个整体。
3
The plane linkage was generalized to a root-face hybrid system that composes of a planar particle system and a planar rigid body system.