• primary battery testing laboratory

प्राथमिक:    initial elementary school prelibation primary

प्राथमिक बैटरी:    primary battery प्राथमिक initial

बैटरी:    battery cell pile director at rgt changing now to

परीक्षण:    check mental testing psychometric test experiment

प्रयोगशाला:    lab laboratory science laboratory science lab