- 丁(nail; spike)
A nail driven straight down looks like the character for nail or the fourth of the heavenly stems.
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Oudin coil
An Oudin oscillator is a type of high-voltage generator.
Oudin resonator
The Oudin coil is a type of high-voltage generator.
Oudin coil
An Oudin oscillator is a type of high-voltage generator.
Oudin resonator
The Oudin coil is a type of high-voltage generator.
A nail driven straight down looks like the character for nail or the fourth of the heavenly stems.
A nail driven straight down looks like the character for nail or the fourth of the heavenly stems.
Oudin coil
Oudin coil
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