cafygapci lujvo

x1 is a gas of x2 at room temperature/STP.

STP = standard temperature and pressure. See also caflitki, cafsligu.


In notes:

caflitki
l1 is liquid at room temperature/at standard temperature and pressure, and consists of composition/material l2.
cafsligu
x1 is a solid of x2 at room temperature/STP.