Spanish | English | |
---|---|---|
Common | ||
Common | tetrodo [m] | four electrode valve |
Electricity | ||
Electricity | tetrodo [m] | tetrode |
Engineering | ||
Engineering | tetrodo [m] | tetrode |
Maritime | ||
Maritime | tetrodo [m] | double-grid tube |
Botanic | ||
Botanic | tetrodo [m] | quadratron |