Modern Marvels - Season 13 Episode 49
Strength...a powerful word, but what does it mean? How is it measured? Why are some things simply stronger than others. How strong is a rope, a tractor, a diamond, a tugboat or even plastic. How and why strength matter to us every day.
- Thể loại: Documentary
- Studio: History, H2
- Từ khóa: technology, invention, disaster, construction, machine
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