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hydrogen ion
met.	氢离子
tech.	水合氢离子
hydrogen-ion
earth.sc.	氢离子

hydrogen ion: 57 phrases in 16 subjects

Agriculture	3
Animal husbandry	4
Automobiles	2
Chemistry	4
Earth sciences	4
Ecology	1
Electronics	6
Metallurgy	3
Oil / petroleum	4
Plastics	1
Refrigeration	1
Space	2
Surgery	1
Technology	16
Textile industry	2
Water resources	3