n.花格平顶，花格平顶的凹板adj.有花格平顶的

英文释义

a. Pertaining to, or having, lacunae; as, a lacunar circulation.

n. The ceiling or under surface of any part, especially when it consists of compartments, sunk or hollowed without spaces or bands between the panels.

n. One of the sunken panels in such a ceiling.