| 释义 |
阴极射线yīnjí shèxiàn装着两个电极的真空管,增加电压时,从阴极向阳极高速运动的电子流,叫做阴极射线。一般情况下,按直线前进,受磁力作用而偏转。能使荧光物质或磷光物质发光。示波管、显像管、电子显微镜等都是阴极射线的应用。{cathode ray; stream of high-speed electrons projected from the cathode of a vacuum tube to the anode under the propulsion of a strong electric field, gen. moving along a straight line, deviating with the influence of magnetic forces, and capable of radiating fluorescent or phosphorescent substances, used for making oscilloscope tubes, kinescopes, electron microscopes, etc.} |