共 50 条
- [1] ATTACHMENT TO A DIFFRACTOMETER FOR OPERATION AT LIQUID-NITROGEN TEMPERATURE INDUSTRIAL LABORATORY, 1967, 33 (01): : 135 - &
- [5] STUDY OF VARACTOR FREQUENCY DOUBLER OPERATION AT LIQUID-NITROGEN TEMPERATURE RADIO ENGINEERING AND ELECTRONIC PHYSICS-USSR, 1971, 16 (03): : 554 - +