| Acronym | Meaning |
 | RLS | Resonance Light Scattering |
| EAAS | Electrothermal Atomic Absorption Spectrometry |
| SEDAC | Socioeconomic Data And Applications Center |
| NLET | National Laboratory For Environmental Testing |
| MDS | Metastable Deexcitation Spectroscopy |
| LIFD | Laser-induced Fluorescence Detection |
| SWICS | Solar Wind Ion Composition Spectrometer |
| GLC | Ground Level Concentration |
| BEEM | Ballistic Electron Emission Microscopy |
| NIST | National Institute Of Standards And Technology (formerly NBS) |
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