This essay discusses the pencils of lines resolution and the trajectory of what the projective pencils of lines composes, and tries to find a method for the point intersection between conic section and straight line .
本文从射影观点出发讨论圆锥曲线的线束分解和此射影线束构成的轨迹,并提出求圆锥曲线与直线交点的一种方法。
twin-cathode ray beam
双电子束，双阴极射线束
3-D rapid ray-tracing and Gaussian ray-beam forward simulation
三维射线快速追踪及高斯射线束正演
3-D geological modeling based on a section and Gaussian beam forward modeling
剖面三维地质建模及高斯射线束正演
Gauss-ray bundle simulation in exploration of metal minerals
高斯射线束在金属矿产勘探中的模拟
Moving beam radiography
可动射束射线透照术
cosecant squared beam
平方余割包线型射束
microbeam X-ray analyzer
微束X-射线分析器
Cathode-ray tube(CRT)
电子束管(阴极射线管)
X-ray diffraction microbeam camera
X射线衍射微光束摄影机
Optimizing radiation and scattering characteristics of linear array with multiple constraints
多约束直线阵列天线辐射散射特性优化
subject to refraction, as of a light beam.
使遭受折射用来描述线偏振光束。
Attenuation, Scattering, Modeling water surface, Light shafts, Caustics.
衰减，散射，水面建模，光线束，焦散。
a group of nearly parallel lines of electromagnetic radiation.
一束几乎平行的电磁射线。
beam penetration cathoderay tube
电子束穿透式阴极射线管
Disconnect all fuel injection harness connections.
断开所有的燃油喷射电线束接头。
Study on Doubly Curved Shaped-beam Reflector Antenna Theory
赋形波束双弯曲反射器天线理论研究
Study on Bone Density Measurements with Fan-beam Dual Energy X-ray Sources
扇束双能X射线骨密度测量方法研究
A thin line or narrow beam of light or other radiant energy.
光线，放射线极细的一条或极窄的一束亮光或其它辐射能