High-power high-frequency transistor C1971 2-20P trimmer capacitor

Transistor C3355 medium power high frequency tube RF86


Medium power high frequency tube RF94 3-60P trimmer capacitor


Wuhuan 1/16, 1/8, 1 / 4W resistor high power high frequency transistor C1972


High frequency ceramic chip capacitors

Low power high frequency transistor




In-depth analysis of the first-level cache and second-level cache of the technical zone CPU eMMC mass burning dilemma, do you really know? Isolation flyback and non-isolated BUCK application design plan Schottky barrier diode selection and application guide How to use Altium in program design Designer puzzle?

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...

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Face Mask play a very important protective role in the outbreak, mainly to protect the respiratory tract, can prevent the spread of respiratory droplets, reduce the invasion of viruses or bacteria, prevent the role of infection, but also can prevent the invasion of harmful substances, also can reduce the probability of cross-infection.

In the outbreak to correctly choose masks and use Medical Masks, Disposable mask, to choose the application of surgical masks or n95 masks, such as disposable cotton masks, disposable paper masks, and anti-smog masks are not recommended to wear, because their tightness is not good, cannot prevent viruses and bacteria, play a preventive role.

At the same time, wearing a mask cannot be used continuously for a long time, it is generally recommended to change every four hours, wearing for a long time may absorb more viruses or bacteria on the surface of the mask and reduce the defense ability.



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