DIN 44402 Bb.1-1986
电子管电气性能的测量.IEC标准、DIN标准.概览(包括微波电子管和光敏电子装置、管脚座.概念.CECC系统)
Measurement of the electrical properties of electronic tubes; IEC-standards, DIN-standards (including microwave tubes and photosensitive devices; pin-base, concepts, CECC-system)
