YTM到期收益(率) Yield To Maturity 的缩写Ytn.[化]钇Yttrium radioisotope钇放射性同位素yttrium nodular iron钇球墨铸铁yttrium isopropoxide异丙醇钇ytterbium oxychloride氯氧化镱yttrium of rare earth稀土钇yttrium cerium oxides氧化铈钇Yttrium Indium Garnet钇-铟-石榴石ytterbium iron garnet镱铁石榴石ytterbium glass laser镱玻璃激光器Yttrium inner standard钇内标