ultrahigh frequencies造句

• Singapore Cable Vision's encoded ultrahigh frequency broadcasts now offer only three channels.
• A past initiative to scare off the army of Rhesus macaques with ultrahigh frequency loudspeakers didn't work.
• Walker said, and the truck has satellite phones and ultrahigh frequency radios that will allow rescuers to reach one another.
• Stanford was selected because its huge dish antenna _ a campus landmark _ can pick up signals in the ultrahigh frequency band.
• The part of the spectrum used for UHF ( ultrahigh frequency ) television channels 60 to 69 ranges from 746 to 806 megahertz.
• Several times in December and January, NASA ground stations sent commands telling the polar lander to switch on its ultrahigh frequency transmitter and send out the equivalent of a Mayday.
• The Nation Publishing Group is the latest partner in the 30-year concession which Siam Infotainment won last year for the nation's first ultrahigh frequency ( UHF ) channel.
• Meanwhile, in the United States, the FCC plans to auction spectrum for interactive data in the frequency band that until now has been used solely for ultrahigh frequency, or UHF, television.
• These double-balanced mixers are very widely used in microwave communication systems, satellite communication systems, and ultrahigh frequency ( UHF ) communications transmitters and receivers, and in radar systems transmitters and receivers.
• Another important topic of interest for Likhterman was the effects of high and ultrahigh frequency currents on healthy and diseased organisms, research which resulted in the development of various methods for the direct and indirect applications of such electrical energy for medical treatment.
• The lander was designed to transmit on that frequency in regular communications with the Mars Global Surveyor, a craft now orbiting Mars and listening for the vanished spacecraft . So the space agency decided it made sense to try to scan those ultrahigh frequencies from Earth as well.
• Unlike the output of a 100-watt light bulb, 100 watts of ultrahigh frequencies in the microwave band are maximally absorbed by human tissue, with the result that long-term low-level exposure has been implicated in increases in breast cancer, leukemia, cataracts, immune suppression, and brain tumors.