| • secondary beta ray | |
| द्वि: double acting double helical gear double | |
| द्वि तीयक: secondary secondary growth द्वि double | |
| बीटा: beta | |
| किरण: gleam ray beam light spark shaft shaft of light | |
| किरण: gleam ray beam light spark shaft shaft of light | |
द्वि तीयक बीटा किरण अंग्रेज़ी में
[ dvi tiyak bita kiran ]
