PULLEY - Định nghĩa trong Từ điển tiếng Anh
pulley (noun)
/ˈpʊli/
Giải nghĩa:
A wheel with a grooved rim around which a cord passes, which acts to change the direction of a force applied to the cord and is used to lift heavy objects.
Ví dụ:
The construction workers used a pulley to lift the heavy steel beams.
Cách sử dụng
A pulley is a simple machine that is used to lift heavy objects. It is a wheel with a groove that holds a rope or cable. The rope or cable is threaded around the wheel, and when you pull one end of the rope, the object that is tied to the other end of the rope will be lifted. Pulleys are commonly used in construction, in elevators, and for heavy lifting in factories. They are also used in everyday objects like window blinds and some exercise equipment.
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