YTM到期收益(率) Yield To Maturity 的缩写Ytn.[化]钇ytterbium hydroxide氢氧化镱ythematous eruption红斑疹ytterbium pentetate放射性喷替酸镱yttrium iron garnet钇铁石榴石Yttriumradioisotopas钇放射性同位素ytterbium ion doping镱离子掺杂yttrium hydrosulfate硫酸氢钇yttrium garnet laser钇石榴石激光器yttrium-base alloy钇基合金yttrium orthoferrite钇正铁氧体