sial 的定义
Geology.
- the assemblage of rocks, rich in silica and alumina, that comprise the continental portions of the upper layer of the earth's crust.
更多sial例句
- During the Mutiny of 1857 the Sial leader again proved his loyalty by serving in person on the British side.
- Sialogogue, sī-al′o-gog, n. a drug which increases the secretion of saliva—also Sial′agogue.