Barium sulphate | แบเรี่ยมซัลเฟต [TU Subject Heading] |
barium sulphate | (n) a white insoluble radiopaque powder used as a pigment, Syn. barium sulfate, blanc fixe |
heavy spar | (n) a white or colorless mineral (BaSO4); the main source of barium, Syn. barytes, barium sulphate, barite |