共 28 条
- [1] [Anonymous], COMMUNICATION
- [4] DUSHMAN S, 1962, SCI F VACUUM TECHNIQ, P14
- [5] FEWER DR, 1966, RADCTR66345 TECH REP, P33
- [6] FEWER DR, AD489969 NTIS DOC
- [8] HETHERIN.G, 1969, ELECTRON ENG, V42, P44
- [9] HETHERIN.G, 1969, ELECTRON ENG, V41, P52