| • phillips catalytic isomerisation | |
| उत्प्रेरक: activator catalyst accelerator catalysator | |
फिलिप्स उत्प्रेरक समावयवीकरण in English
[ philipsa utprerak samavayavikaran ] sound:
| • phillips catalytic isomerisation | |
| उत्प्रेरक: activator catalyst accelerator catalysator | |
