Portuguese term
polias de engrenagem
"... acoplamentos e juntas; engrenagens: definição e aplicações, engrenagens cilíndricas de dentes retos, de dentes helicoidais e cônicas; correntes de transmissão: tipos e características; cabos de aço: propriedades, elementos mecânicos e padronizados, utilizados nos sistemas de fixação temporários e permanentes; cálculos de relação RPM de polias de engrenagem."
| 3 +4 | gear pulleys |
Patricia Fierro, M. Sc.
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Non-PRO (1): Mario Freitas
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Proposed translations
Ecuador
Language and engineering expert
Native in: Spanish 
, English
Works in: English to Spanish, Portuguese to English, Spanish to English, and 7 more.
gear pulleys
| agree |
Nick Taylor
: Can't be anything else really!
57 mins
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'Brigada, Nick
|
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| agree |
Mario Freitas
:
3 hrs
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'Brigada
|
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| agree |
Alexandra Valle Fernandes
13 hrs
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'Brigada
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| agree |
Gilmar Fernandes
: translation is correct, but I think it should be gears and pulleys (typo in source text)
16 hrs
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'Brigada, yes, it might be a typo.
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Discussion
I also found it strange... I'll ask the client. Thank you both for the suggestions.
http://www.redutoresibr.com.br/pt/Noticia/como-se-calcula-a-...
http://benchnotes.com/Gear and pulley Speeds/gear_and_pulley...