Dictionaries

General dictionaries

http://www.linguee.es/

http://www.wordreference.com/es/

https://tureng.com/es/espanol-ingles

Vehicle Transportation and Maintenance

Monolingual dictionaries:

http://www.motorera.com/dictionary/

https://www.edmunds.com/glossary/

English-Spanish dictionaries:

http://www.100autoguide.com/dictionary/contents.htm

http://www.ase.com/MediaLibrary/Images/ASE-Glossary—Test-Center-Version.pdf

Spanish-English dictionary:

http://www.automotivedictionary.net/

Electricity

Monolingual dictionary:

http://ee.sharif.edu/~lcsl/useful/Electrical%20Engineering%20Dictionary.pdf

Electronics

Monolingual dictionaries:

http://www.hobbyprojects.com/dictionary/a.html

http://www.interfacebus.com/Glossary-of-Terms.html