A sketch by Leonardo da Vinci of a flying machine known as the "helical air screw" or the "airscrew". It was designed to compress air to obtain flight, similar to modern helicopters.
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Details
Creative#:
TOP22175763
Source:
達志影像
Authorization Type:
RM
Release Information:
須由TPG 完整授權
Model Release:
N/A
Property Release:
No
Right to Privacy:
No
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