For this purpose, the use of large-scale corpora annotated with domains is desirable.
since those resources are prohibitively expensive, we used the "Nova" dictionary for Japanese/English machine translation systems 3 , which includes approximately one million entries related to 19 technical fields as listed below: aeronautics, biotechnology, business, chemistry, computers, construction, defense, ecology, electricity, energy, finance, law, mathematics, mechanics, medicine, metals, oceanography, plants, trade.