oxygen-nitrogen

Each painting, once completed, must be sealed within airtight frames of infrared-filter glass while it's still outside, because if the painting is brought inside an oxygen-nitrogen environment unprotected, changes of atmospheric pressure and light spectrum will ruin the composition.

A King of Infinite Space Steele, Allen 1997

The Titan expedition had discovered a microscopic life-form in a liquid-methane tide pool on the moon's surface, one that mutated and became an aerobic virus when it was accidentally exposed to the base's oxygen-nitrogen atmosphere.

A King of Infinite Space Steele, Allen 1997

The fourth planet had an oxygen-nitrogen atmosphere and according to sensors was abundant with flora.

Mosaic Jeri Taylor 1996

The fourth planet had an oxygen-nitrogen atmosphere and according to sensors was abundant with flora.

Star Trek Voyager Mosaic Jeri Taylor 1996

The fourth planet had an oxygen-nitrogen atmosphere and according to sensors was abundant with flora.

Star Trek Voyager Mosaic Jeri Taylor 1996

The only marginally habitable world it possessed an oxygen-nitrogen atmosphere, but no life was the one the Federation had code-named “Gateway.”

Time for Yesterday A. C. Crispin 1990

Did they breathe this particular oxygen-nitrogen balance, too?

If the Stars are Gods Benford, Gregory, 1941- 1977

Central Records on Hospital Earth sent back a physical description of a tiny outer planet of the star, with a thin oxygen-nitrogen atmosphere, very little water, and enough methane mixed in to make the atmosphere deadly to Earthmen.

Star Surgeon Alan Edward Nourse 1960

If you ignite a jet of oxygen-nitrogen in an atmosphere of hydrogen-methane, you get a flame that doesn't differ much from the flame from a hydrogen-methane jet in an oxygen-nitrogen atmosphere.

Unwise Child Randall Garrett 1957

Takes the fun away when it turns out that a water world always has an oxygen-nitrogen atmosphere.

The Martian Way Asimov, Isaac, 1920- 1955