Objects are sometimes held together by .
Предметыиногдасоединяютсявинтами.
Very large screws can also be used as simple machines,
Очень крупные винты могут использоваться и в качестве простых механизмов,
such as flower or apple presses.
таких как прессы для выжимания цветочного или яблочного сока.
A screw consists of a spiral groove called a screw thread that circles a simple shaft.
Винт имеет на себе спиральную канавку, называемую резьбой, которая оборачивается вокруг простого стержня.
The distance between each thread is called the screw's pitch.
Расстояние между витками резьбы называется шагом винта.
One complete turn of the screw moves it the distance of one pitch, which is a smaller distance than it is turned.
Один полный оборот винта продвигает его на расстояние шага резьбы, что меньше расстояния полного оборота винта.
It moves forward, therefore, with a much greater force than the turning force.
Поэтому винт продвигается вперед со значительно большей силой, чем сила, требуемая для прокручивания.
That is why screws can bore into hard materials.
Вот почему винты можно ввинчивать в твердые материалы.
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