[化] 气体密度计

[医] 气体密度计

Elaterometer \El`a*ter*om"e*ter\, n.
Same as {Elatrometer}.

Elatrometer \El`a*trom"e*ter\, n. [Gr. ? a driver + -meter.]
(Physics)
An instrument for measuring the degree of rarefaction of air
contained in the receiver of an air pump. [Spelt also
{elaterometer}.]