How 1 kg is defined?

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Tags

1. #meter
2. #kilogram
3. #weighs
4. #standard
5. #international
6. #defined
7. #cubic
8. #abbreviation
9. #system
10. #surface
11. #earth
12. #originally
13. #units
14. #approximately
15. #liter
16. #pounds
17. #water