立方 りっぽう最密 さいみつ充填 じゅうてん構造 こうぞうなら
rippōsaimitsujūtenkōzōnara

Noun
Da Copula

The "-nara" conditional form ("if/when…") of 立方最密充填構造

1. If/when the cubic closest packing structure

Nara Conditional
Geology