Standard test method for the determination of pyramid puncture resistance of unprotected and protected geomembranes 未保护和保护土木薄膜角锥穿孔强度的标准试验方法
Later he used sharp bone or horn , metal knives and , more recently , rubber and plastic 后来人类使用锋利的骨头或角锥，金属刀具，接下去直到近代，才使用橡胶或塑料制品。
Angle masters with various angles , prisms , corner cubes and lage aperture and high precision cemented plate 不同角度的标准角块、棱镜、角反射器（角锥棱镜）及大口径、高精度的光胶板。
Anyway , the pyramid horn sensor can be a resonance sensor , which operates with high order mode . this provides physical explanation for the puzzle of sensitive operating point of the cpy - 1 从而，揭露了角锥喇叭近场探头摘要存在敏感工作点的奥秘一一即角锥喇叭探头构成一种高次模谐振式探头。
Cartoonist william nearly describes it this way your feet and hands are attached but your upper body can move around the center of the bike in a cone shape when you stand you simply get a bigger cone of movement which allows you to have more control over the bike moving your body around also allows you to shift the focus point of your weight from seat to pedals to handle bars you can add weight to either wheel to improve traction for breaking climbing or turning 漫画家?威廉描述：虽然脚和手是固定的，但可以身体却可以（以坐垫为中心）角锥状地活动，当你站起来可以把中心移到双脚而得到更大的角锥体移动，那会让你有更大的空间改变重心，让前后轮得到煞车、爬坡和转弯的最大抓地力。
2 for the first time , the author brings forward the concept of " pyramid horn high order mode resonator " and pml - fdtd technique is used to analyze the electromagnetic field distribution in the pyramid horn . the results show that the pyramid horn sensor is much more sensitive than the open ended waveguide or transmission line sensors . the sensor we used is a kind of resonance sensor 二、首次提出了“角锥喇叭高次模谐振腔”的概念，并且采用pml ? fdtd法分析了角锥喇叭场分布状态，从而，得出了角锥喇叭探头比终端开口波导或传输线探头灵敏得多的原因在于：我们采用的探头是谐振式探头，消声瓦样品的差别相当于对角锥谐振腔的微扰；采用波导或同轴线探头，消声瓦样品的差别相当于对传输线终端负载有一点变化而已。
The effective reflection area of a cubic corner reflector is defined , it is testified for the cubic corner reflector that the ray reflect from this prism is not parallel with the ray incident on the corner of undersurface of this prism , the effective reflection area is calculated in the case of the ray incident on the undersurface of this prism vertically , the acreage of the effective reflection area is two thirds as that of the undersurface of this prism 定义了立方角锥棱镜的有效反射区，证明了立方角锥棱镜底面角部区域(即非有效反射区)入射光与出射光不平行，并且在入射光垂直棱镜底面入射情况下计算得有效反射区的面积为底面的三分之二。
5 . otherwise , the applicability of cube comer array in the wide spectrum high power solid - state laser facility was researched as a relatively absolute part in this paper . through simulation , the action of cube corner array to reduce beam ' s focal spot size was testified visibly , and the smoothing effect of beam ' s modulation caused by cube corner array was proved primarily on the wide spectrum condition 另外，作为一部分相对独立的内容，本文对宽频带激光传输条件下采用角锥棱镜阵列抑制低频波前畸变的设想进行了探索性的研究，通过仿真模拟验证了角锥棱镜阵列具有抑制低频波前畸变、提高激光焦斑能量集中度的显著作用，并初步验证了宽频带激光传输条件下近场振幅高频调制的匀滑效应。
