Mechanisms of open & close Doors , Windows - Mechanical Principles - ميكانيزمات حركية - mechanisms

Mechanisms of opening & closing Doors , Windows - Mechanical Principles - Mechanical Mechanisms - ميكانيزمات حركية - Mechanisms - Mechanism - ميكانزمات - ميكانيزمات - مبادئ ميكانيكية - ميكانيكية - ميكانيزمات ميكانيكية

[@huzefa6421]

Helpful for innovation.... Thank you

[@user-jz4zu8ln5y]

기술이 대단하십니다

[@onderyuksel1203]

Very nice thank you

[@vike1565]

Interesting

[@user-pv5yh4de6f]

기계원리가 대단하십니다

[@khainguyendinh8866]

can you give me your cad file of the first one ??