English term
Ukraine
careful, caring, and perfectionist
Native in: Russian 
, Ukrainian
Works in: English to Russian, Russian to English, Ukrainian to English, and 1 more.
under the/a pressure of 5.5 MPa
(A sample was tested) at a/the temperature of 90 C
Which of the articles would you use here and why? TIA
Non-PRO (2): Cilian O'Tuama, Jim Tucker (X)
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Responses
United States
Was nicht ist, kann noch werden.
Native in: English (Variant: US) 
Works in: German to English
at a pressure {temperature} of
I cannot say why, it is just how it is used here.
United States
More than 100 million words proofread!
Native in: English (Variants: British, US)
Works in: English
The article 'a' for both because of the accompanying figures
| agree |
British Diana
55 mins
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| agree |
Jim Tucker (X)
: "Of the earth's core" is a specifying genitive (a form of the poss. gen.)--hence "the," while "of 100 degrees" is a descriptive genitive, which is why it wants the indefinite article.
13 hrs
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