ビューフォート風力 ふうりょく階級 かいきゅうであれば
byū fōtofū ryokuka i kyūdeareba

Noun
Da Copula

The "-eba" conditional form ("if/when…") of ビューフォート風力階級

1. If it were Beaufort wind scale; If the Beaufort wind scale were

Ba Conditional