気相 きそうエピタキシャル成長 せいちょうであれば
kisō epitakisharu seichōdeareba

Noun
Da Copula

The "-eba" conditional form ("if/when…") of 気相エピタキシャル成長

1. if it is gas-phase epitaxial growth; were it gas-phase epitaxial growth

Ba Conditional