decussation of pyramid

Discussion on the rational form of conical structure and the rationality of designing the cone on the cylinder for ice force condition;

冰力作用下锥体的合理结构形式及在柱体上设计锥体的合理性探讨

For the single way filament winding of a cone structure , the corresponding mathematics model and winding pattern for four axes winding machine were derived by using space analytic geometry.

本文对锥体结构的单向纤维缠绕,应用空间解析几何的知识建立了相应的数学模型,并建立了在相应于四轴缠绕机上的缠绕线型,同时利用VB6。

From the principle of geometrical optics,the mode that electromagnetic wave promulgate in pyramid absorber is analyzed,which include electromagnetic wave promulgate inside the pyramid and reflect between pyramids nearby.

从几何光学原理出发,详细分析了电磁波在角锥吸波材料中的传播方式,包括在锥体内部的传播以及相邻锥体之间的反射情况,得出锥体顶角与锥体材料折射率之间的复杂关系,并综合考虑其它影响因素,确定锥体顶角的最佳取值。

Advanced model for calculation of ice force on conical structure;

用于锥体冰载荷计算的改进模型

Design of icebreaking cone for jacket platform in Bohai;

渤海导管架平台的破冰锥体设计

Diffraction ray tracing of GTD on the cone and cylinder;

圆锥体与圆柱体的几何绕射理论绕射线寻迹

Geometrical relationship among the length of triangle sides is used to determine the angle of rotation,the cone can be machined without using measuring instrument.

利用圆锥三角形边长的几何关系来确定转动角度,可以不用测量仪器加工出圆锥体。

A hyperbolic error often appears in cutting cone with ordinary lathe tool and arris body lathe tool.

根据用普通车刀和棱体成形车刀车削加工圆锥体时将产生双曲线误差的结果,通过计算得出产生双曲线误差的主要因素及使其误差最小时所要注意的事项。