I

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• The repulsion between two electrons comes about from the exchange of photons.

• An earthquake is generated (or develops, or occurs) when two blocks ...

• The potential appearing across the output terminal is ...

• These forces arise from the displacement of the aileron.

• The methylamines are widely distributed in nature where they arise probably as the result of decomposition of ...

• The strains that are brought about in steel during the hardening process ...

• Planets may come into being (or existence, or may result) when small planetesimals fall together.

• Above 1000°F another process is coming into play.

• The pipe developed a leak ([lang id=2]в трубе возникла течь[/lang]).

• Under such conditions, it is possible that a crack may develop in a furnace.

• All tools develop ([lang id=2]во всех инструментах возникают[/lang]) residual internal stresses.

• Under these conditions a bias will be developed because of the flow of electrons from grid to ground.

• If a leak occurs ...

• Problems invariably occur which call for ...

• When life first originated ...

• A wave originating at point S can reach any of the several detectors.

• No known meteorites seem to have originated on the Moon.

• A model of this type can be changed many times during the construction as new problems present themselves.

• The temperature at which the disorder sets in is a function of ...

• Chemistry grew out of the black magic of the dark ages and the alchemy of the middle ages.

• New methods for seeking out genetic loci are emerging.

• This definition came about because it simplified the study of control systems.

• A dispute which ensued between the two groups ...

• These forces are generated in the earth's interior.

• Shear is produced in columns by (1) variation in ...

II

см. тж. появляться

• Ultimately, a molecule similar to modern catalase came into existence.

• Brain tumours are not likely to arise from a mature neuron.

• Planets may result [or come into being (or existence)] when small planetesimals fall together.

• As a result there occurs what is known as the Cerenkov effect.

• These craters date back to a period of ...

• Planets may evolve into existence when ...

• Interest in developing ... goes back to the 1950s.

III

см. тж. в связи с этим возникает вопрос

• Such forces occur when ...

• In our galaxy, supernovae occur once every 30 years or so.

• A complication has cropped up.

• Three questions might come to mind about the properties of ...