| • hollow cathode | |
| खोखला: honey combed concave hollow empty vain vacuous | |
| कैथोड: cathode negative kathode | |
खोखला कैथोड अंग्रेज़ी में
[ khokhala kaithod ]
| • hollow cathode | |
| खोखला: honey combed concave hollow empty vain vacuous | |
| कैथोड: cathode negative kathode | |
