pressure unit

Từ điển WordNet v3.1 - WordNet Dictionary

noun

a unit measuring force per unit area
• Hypernyms:
unit of measurement, unit
• Hyponyms:
standard atmosphere, atmosphere, atm, standard pressure, pascal,
Pa, torr, millimeter of mercury, mm Hg, pounds per square inch, psi,
millibar, bar, barye, bar absolute, microbar