共 50 条
- [24] DIRECT-READING WAVEMETERS PROCEEDINGS OF THE INSTITUTE OF RADIO ENGINEERS, 1947, 35 (02): : 179 - 179
- [27] A SIMPLE DIRECT-READING FLUXMETER JOURNAL OF SCIENTIFIC INSTRUMENTS AND OF PHYSICS IN INDUSTRY, 1949, 26 (02): : 40 - 42
- [28] ISOTOPIC URANIUM ANALYSIS ON THE DIRECT-READING OPTICAL SPECTROGRAPH SPECTROCHIMICA ACTA, 1959, 15 (3-4): : 294 - 294
- [29] A DIRECT-READING PHOTOELECTRIC DENSITOMETER JOURNAL OF THE SOCIETY OF MOTION PICTURE ENGINEERS, 1939, 33 (04): : 403 - 409