Terms: Ultrasonic Enrichment (25), centrifugal enrichment (657), enrichment (54,700,000),
Terms: uranium enrichment (7,860,000), isotope separation (516,000), isotope separation (516,000), isotopic separation (29,800), isotope separator (24,400), isotopic separator (59),
Thermoacoustic enrichment of the isotopes of neon
Boolean: "uranium enrichment" +ultrasound (2,350), "uranium enrichment" +ultrasonic (1,150), "uranium enrichment" +acoustic (12,400), "isotope separation" +ultrasound (1,010), "isotope separation" +ultrasonic (1,520), "isotope separation" +acoustic (7,520),
Boolean: enrichment +ultrasound (293,000), enrichment +ultrasonic (157,000), enrichment +acoustic (849,000),
Terms: acoustic refrigerator (506), ultrasonic refrigerator (4), acoustic refrigeration (598),
Terms: thermoacoustic (127,000), thermoacoustic enrichment (7), thermoacoustic separation (25), acoustic enrichment (51), thermoacoustic separator (3),
Boolean: thermoacoustic +isotopes (574), thermoacoustic +isotopic (421), thermoacoustic +isotope +separation (173),
Terms: acoustic separation (229,000), ultrasonic separation (804),
Terms: material separation (45,900), separation techniques (437,000),
Terms: gas separation (381,000),
Boolean: "gas separation" +acoustic (19,400), "gas separation" +ultrasonic (12,700),