复数：quadrillions
n.
the number that is represented as a one followed by 24 zeros
"in England they call a septillion a quadrillion"
the number that is represented as a one followed by 15 zeros
A voyage through scales, a missing quadrillion and why the climate is not what you expect
Method for detecting atmospheric vapors at parts per quadrillion (PPQ) concentrations
Spectroscopic Detection of Radiocarbon Dioxide at Parts-per-quadrillion Sensitivity
Spectroscopic Detection of Radiocarbon Dioxide at Parts-per-quadrillion Sensitivity
Iron detection in the part per quadrillion range in silicon using surface photovoltage and photodissociation of iron‐boron pairs
Trans-floating-point arithmetic removes nine quadrillion redundancies from 64-bit IEEE 754 floating-point arithmetic
Parts per quadrillion level ultra-trace determination of polar and nonpolar compounds via solvent-free capillary microextraction on ...
Analysis of perfluorinated acids at parts-per-quadrillion levels in seawater using liquid chromatography-tandem mass spectrometry.
Direct Determination of Organic Compounds in Water at Parts-per-Quadrillion Levels by Membrane Introduction Mass Spectrometry
Air-borne laser induced fluorescence system for measuring OH and other trace gases in the parts-per-quadrillion to parts-per-trillio...
