ຫ້ອງສະແດງຮູບເງົາແລະວີດີໂອຂອງພວກເຮົາສາມາດຖ່າຍທອດຫຼືດາວໂຫລດໂດຍສະມາຊິກເທົ່ານັ້ນ
ສືບຕໍ່ເບິ່ງໃຫ້ຟຣີ➞ໃຊ້ເວລາ ໜ້ອຍ ກວ່າ 1 ນາທີເພື່ອລົງທະບຽນແລ້ວທ່ານສາມາດເພີດເພີນກັບຫົວຂໍ້ຮູບເງົາແລະໂທລະພາບແບບບໍ່ ຈຳ ກັດ.
![](https://image.tmdb.org/t/p/w780/cp8s3VpAQnOI925VDteAh8sSzUX.jpg)
Mechanical Principles 1930 ບໍ່ ຈຳ ກັດການເຂົ້າເຖິງຟຣີ
![Mechanical Principles 1930 ບໍ່ ຈຳ ກັດການເຂົ້າເຖິງຟຣີ](https://image.tmdb.org/t/p/w185/85ppMKtbx0rNUVm2zyETqJ0CFoj.jpg)
Close up we see pistons move up and down or side to side. Pendulums sway, the small parts of machinery move. Gears drive larger wheels. Gears within gears spin. Shafts turn some mechanism that is out of sight. Screws revolve and move other gears; a bit rotates. More subtle mechanisms move other mechanical parts for unknown purposes. Weights rise and fall. The movements, underscored by sound, are rhythmic. Circles, squares, rods, and teeth are in constant and sometimes asymmetrical motion. These human-made mechanical bits seem benign and reassuring.
ເວລາແລ່ນ: 11 ນາທີ
ຄຸນະພາບ: HD
ປ່ອຍຕົວ: Feb 05, 1930
ປະເທດ: United States of America
ພາສາ: No Language