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单词 sial
释义

WordReference Random House Unabridged Dictionary of American English © 2024
si•al  (sī′al),USA pronunciation n. [Geol.]
  1. Geologythe assemblage of rocks, rich in silica and alumina, that comprise the continental portions of the upper layer of the earth's crust. Cf. sima 1.
  • German, equivalent. to Si(licium) silicium + Al(uminium) aluminum
  • 1920–25
si•al′ic, adj. 

Collins Concise English Dictionary © HarperCollins Publishers::
sial /ˈsaɪəl/ n
  1. the silicon-rich and aluminium-rich rocks of the earth's continental upper crust, the most abundant individual rock being granite
Etymology: 20th Century: si(licon) + al(uminium)

sialic /saɪˈælɪk/ adj
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更新时间：2024/9/21 22:19:08