| 单词 | shf |
| 释义 | > as lemmasS.H.F. S.H.F. n. (also s.h.f.) Radio superhigh frequency. ΘΚΠ society > communication > telecommunication > radio communications > [noun] > radio wave > specific frequencies very high and low frequency1488 VHF1932 UHF1937 VLF1938 S.H.F.1948 VOR1955 1948 Prof. Papers Inst. Post Office Electr. Engineers No. 197. 3/1 S.H.F. systems are those operating in the range 3,000 to 30,000 Mc/s, 10 to 1 cm. wavelength. 1958 Electronic Engin. 30 276/1 The radio repeater design is based on the principle of amplification at intermediate-frequency with reconversion to s.h.f. and the use of a travelling-wave amplifier to deliver the final output power. < as lemmas |
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