共 50 条
- [4] Part-per-billion level radiocarbon dioxide detection using photoacoustic spectroscopy 2020 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO), 2020,
- [8] DETERMINATION OF PART-PER-BILLION LEVELS OF CITRIC AND NITRILOTRIACETIC ACIDS IN TAP WATER AND SEWAGE EFFLUENTS JOURNAL OF CHROMATOGRAPHY, 1972, 72 (02): : 259 - +
- [10] Tracing part-per-billion line shifts with direct-frequency-comb Vernier spectroscopy PHYSICAL REVIEW A, 2015, 91 (01):