standard atmosphere
atmosphere ***
atm
standard pressure

The powder is progressive-burn, so you get standard pressure for the full length of the barrel.

It refers to the element's usual state at room temperature and standard pressure.

It is prone to photodisassociation at standard pressure and temperature.

Usually the standard pressure is omitted from such expressions.

All of this is assuming that you are at standard pressure of 1 atmosphere.

It is just as important to know the standard pressure as the temperature.

But the bubble looks no different to one that formed at standard atmospheric pressure.

Most published data are given for standard pressure.

Cold cracking, by contrast, can be conducted at room temperature and standard atmospheric pressure.

Federation military standard pressure is just barely good enough to appreciate superb coffee.