@INDIANARMY_21001

इंसान को टेंशन कब hoti हैं @INDIANARMY_21001

human blood || मानव रक्त || @INDIANARMY_21001

|| मानकों की SI प्रणाली SI || SYSTEM OF UNITS || @INDIANARMY_21001

TIME CONSTANT @INDIANARMY_21001

transmission of elecrical power @INDIANARMY_21001