P
praveen kokkirala
Guest
am pagdisenyo ng antena sa fr4 substrate ..... maaari kahit sino sabihin kung ano ang metal ay fr4 substrate ....
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news
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W jakich sytuacjach, korzystając z sieci, narażamy swoje dane i tożsamość na największe ryzyko? Poniżej sześć najczęstszych błędów popełnianych przez użytkowników internetu i sposobów, jak im przeciwdziałać.
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U
usman_mahfooz
Guest
Maghanap dito.Fr4 ay hindi isang metal.nito ang isang dielectric.http://en.wikipedia.org/wiki/FR4
S
Sergio mariotti
Guest
FR4 ay hindi isang metal.
FR4 ay ang pangalan ng pinaka-karaniwang PCB (Printed circuit Board) nakalamina.
Ang isang flat foil na ginawa sa pamamagitan ng salamin-epoxy dagta ay napaligiran nang dalawang thinner matanso metal foils.
FR4 ay ang pangalan ng pinaka-karaniwang PCB (Printed circuit Board) nakalamina.
Ang isang flat foil na ginawa sa pamamagitan ng salamin-epoxy dagta ay napaligiran nang dalawang thinner matanso metal foils.