( slide rules)
A slide rule is an instrument that you use for calculating numbers. It looks like a ruler and has a middle part that slides backwards and forwards.
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( slide rules)
A slide rule is an instrument that you use for calculating numbers. It looks like a ruler and has a middle part that slides backwards and forwards.
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Collins COBUILD Advanced Learner's English Dictionary. Английский словарь Коллинз COBUILD для изучающих язык на продвинутом уровне. 2006