This paper describes the derivation ,definition,properties and application of the Z cathode The conversion and replacement among Z cathode ,Helix cathode,cage cathode and mesh cathode are also discussed.%本文阐述了Z阴极的由来、定义、特性和运用,以及Z阴极与螺旋阴极、笼型阴极、网状阴极之间的转换和代替。
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