conservation of enegry इन हिंदी

conservation: रक्षण संरक्षण

of: स् का की पर बाबत

conservation biology	conservation of angular momentum	conservation of charge
conservation of coal and development of coal mines	conservation of earth resources	conservation of energy
conservation of foreign exchange	conservation of liner momentum	conservation of mass

अंग्रेज़ी→नहीं। नहीं।→अंग्रेज़ी