I
см. тж. в результате чего получаем; извлекать; можно получить; обеспечивать путём; приобретать
• Several methods were used to arrive at an estimate of earth age.
• Van der Waals' equation is arrived at (or deduced, or derived) by assuming that ...
• Additional resolution can be gained by using ...
• You can substitute ... and come up with a true equality.
• This value is found (or obtained) from the eigenvalue equation.
• To secure information on ...
• Related equations can be worked out in the same way.
• From (A3) we have (or get, or obtain): ...
II
• The natural dyestuffs are derived from plants or animals.
• By drilling hundreds of holes they recovered 50,000 core samples.
• They were able to secure about a 20% yield of ...
• Bromate may be formed from bromide electrolytically.
• The operating pulses could be derived (or obtained) from a contact breaker.
• A more uniform production of acetylene gas that can be had from the untreated calcium carbide ...
• In that period, many antibiotics were isolated in pure form.
• Ammonium chloride is made (or prepared, or produced, or obtained) by absorbing ammonia in hydrochloric acid.
• The weight of ... is derived from the ratio of ...
