книги Наука, техника, медицина Гуманитарные науки Общественные науки Социология Общая и теоретическая социология Анализ данных и исследования

Ladder

Код 3242189

  • ISBN: 978-5-5141-9476-6

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High Quality Content by WIKIPEDIA articles! A ladder is a vertical or inclined set of rungs or steps. There are two types: rigid ladders that can be leaned against a vertical surface such as a wall, and rope ladders that are hung from the top. The vertical members of a rigid ladder are called stringers or rails (US) or stiles (UK). Rigid ladders are usually portable, but some types are permanently fixed to buildings. They are commonly made of metal, wood, or fibreglass, but they have been known to be made of tough plastic.

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ISBN: 978-5-5141-9476-6

Книга находится в категориях

Теория машин и механизмов ГОСТы, стандарты

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