pulse glass

短语

词形变化

pulse glasses 复数 pulse glasses

释义与例句

n.
  1. 1.

    An instrument consisting of a glass tube with terminal bulbs, and containing ether or alcohol, which the heat of the hand causes to boil.

    化学

词源

So called from the pulsating motion of the liquid when it is warmed.

来源：wiktionary