
Multinational policies support the development of energy storage technologies:
The United States has positioned energ…
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With the pollution of the environment and the energy shortage, electric bicycles have become more and more popular among people with the advantages of no waste gas pollution, no noi…
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Telegraph transmitter
Launch emission
Emission (or signal) bandwidth of an emission (or a signal)
Transmitter
Transmitter sideband spectrum
Rated output power of transmitter
Transmitter combiner
Cooling system of transmitter …
Since the color and luminous efficiency of LEDs are related to the materials and processes for making LEDs, red, green and blue are widely used at present. Due to the low operating voltage of the LED (only 1.5-3V), it can actively emit light and have a certain bright…

As a leading economic country in the Middle East, the United Arab Emirates has trade relations with 179 countries and territories and enjoys the reputa…
On December 21, 2012, an unusual day, several years ago, it had been given the title "End of the World". This controversial "Mayan prophecy" (the ancient Maya prophecy, after the night of December 21, 2012, the dawn of December 22 will never arrive.…