Trihedron

A spherical center three surface angle can be directly built in accordance with the space angle, which makes up a spherical triangle, then the space angle can be calculated using the method of calculating the spherical triangle.

即对空间角度可直接建立球心三面角构成球面三角形，并通过计算球面三角形的方法求解空间角度。

Aim To calculate the RCS of trihedral corner reflectors and improve the typical arithmetic of SBR.

目的研究三面角反射器后向散射场问题，并对射线跟踪法的典型算法进行改进，以提高运算速度。

This paper focuses on the effects of machining tolerance on monostatic RCS of triangular trihedral corner reflectors(TTCR) by using Physical Optics(PO) method.

基于物理光学法(PO)研究了三角形三面角反射器(TTCR)加工公差对其单站雷达散射截面(RCS)的影响。

This shows the grinding jet used for slit is based on the theory of trihedral adherent wall jet.

研究了油田油井中磨料射流割缝的机理,阐明了磨料射流割缝时流体在缝隙中流动的状态,讨论了水力喷砂割缝时射流流动情况,认为在套管中对套管割缝时系自由淹没射流,说明了油井中磨料射流割缝是三面附壁复合射流的原理,解释了不同材料在高压水射流作用下的破坏形式和为什么淹没磨料射流在压力很低的情况下仍然能够将靶距为1000mm以外的5mm钢板击穿。