YTM到期收益(率) Yield To Maturity 的缩写Ytn.[化]钇ytterbium-base alloy镱基合金yttrium hydrophosphate磷酸氢钇yttrium gallium garnet钇镓石榴石yttium aluminate laser铝酸钇激光器Ytterbium radioisotope镱放射性同位素Yttrium Aluminum Laser钇铝激光器ytotoxic phytotoxicity植物毒性药害ytterbium metaphosphate偏磷酸镱Ytterbium-doped fiber掺键光纤Yttrium lanthanum oxide氧化镧钇