Eudiometer

[,ju:di'ɒmitә]

(noun.) measuring instrument consisting of a graduated glass tube for measuring volume changes in chemical reactions between gases.

手打:西尔维亚--From WordNet

(n.) An instrument for the volumetric measurement of gases; -- so named because frequently used to determine the purity of the air.

手打:肖恩

n. an instrument for measuring the purity of or the quantity of oxygen contained in the air.—adjs. Eudiomet′ric -al.—n. Eudiom′etry.

埃尔温整理