Every antenna has a natural resonant frequency at which maximum antenna efficiency is achieved. Placing a shunt capacitor (to lower the resonant frequency) or a shunt inductor (to raise the resonant f
I am a newcomer in the solar photovoltaic industry and only know how to use a laminator. My company's equipment: Boshuo semi-automatic laminator (button type) Equipment problem: Siemens LOGO! 230RC an
[size=5][backcolor=rgb(222, 240, 251)]Allwinner A33 processor supports Android 4.4 and 6.0 versions[/backcolor][/size] [backcolor=rgb(222, 240, 251)]Because the default configuration in the system sou
Security display, large screen splicing is becoming more and more market-oriented and widely used, but the price is getting cheaper and cheaper. Is this a good thing? How many people can stay in the m