x-y坐标阴极射线管显示器
x-y coordinate CRT display
八线阴极射线示波器
eight-channel cathode-ray oscilloscope
标准极射赤面投影
standard equator plane projection
差分交换式射极跟随器
Differential switched emitter follower
超高频阴极射线管
ultra-high frequency cathode ray tube
赤平极射投影法
Stereographic polar projection method
stereographic projection method