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The dimethyl-amine group and the aldehyde group are in the 1.4 relationship to each other.
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Jupiter's atmosphere is hydrogen and helium in a three-to-one ratio.
II
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There are differences as to (or concerning, or regarding, or as regards) the time of drying (or as far as the time of drying is concerned).
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The term binding energy is sometimes used to describe the energy which must be ...
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The conditions for measurement must be optimized with reference (or in respect, or with respect, or in regard, or with regard) to (or in respect of) the choice of ...
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Now we can do the same for the set of even integers.
Русско-английский научно-технический словарь переводчика. Михаил Циммерман, Клавдия Веденеева. 2003.