by applying high pressure
because that's what it is?Liquefied Petroleum Gas = LPG
gas
LPG: Liquefied Petroleum Gas CNG: Compressed Natural Gas
by compressing it
NGL is not liquefied natural gas, which is condensed natural gas that is compact and therefore convenient for overseas shipping.
Helium.
You cool it down.
Yes.
That the gas has liquefied.
Carbon dioxide (CO2) can be liquefied under pressure at ordinary temperature.
lpg
sometimes