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#gate_lecture #mechanical_engineering #adapala_chandra_sekhar #IES_mechanical #adapala_academy #ies_gs #ese_gs #engineering_service_genreal_study #ese_gs_strategy #engineering_service_exam #study_plan_for_ese #economy_for_ies_gs #rail_development_authority #li-ion_battery #motor_vehicle_amendment #TIR #microdot #bullet_proof_jackets #kelvarКомментарии: