bitumens

名词 n.
/ˈbɪtjumɛnz/   

英文释义

名词 n.
  1. plural of bitumen form-of,plural
    — Moſt naturaliſts and chemiſts aſcribe the formation of petrolea to the decompoſition of ſolid bitumens by the action of ſubterraneous fires.
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