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"Pulley block" nghĩa là gì?
14 Jun, 2018
Photo courtesy Matti Mattila.
'Pulley block' nghĩa là ròng rọc.
Ví dụ
The repetitious work of these machines suggested in turn the first experiments in mass production based on interchangeable parts (clocks, guns, gun carriages, pulley blocks, locks, hardware, furniture).
This substitution of machine for men had consequences, as Winchester demonstrates with the pulley block. Pulley blocks were the devices that sailing ships used to manipulate the rigging, trimming, raising, and lowering of the sails.
Artefacts from a slave ship wrecked off South Africa are due to be unveiled in Cape Town. They are thought to be the first objects to be recovered from a slave ship that went down while it was transporting people. Archaeologists hope the objects will help scholars, as well as be a memorial to all those caught up in the trade. Millions of Africans were transported as part of the trans-Atlantic slave trade and many died on the journey. Remnants from shackles, iron bars used as ballast for the ship and a wooden pulley block will be shown for the first time at Cape Town's Iziko Slave Lodge museum on Tuesday.
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