Isorna伊索尔纳ISOabbr.国际标准化组织(=International Standards Organization)isothermal moisture sorption等温吸湿isoalloxazine mononucleotide异咯嗪一核苷酸isodihydrodehydroxylinderene异二氢脱羟钓樟烯isovaleryl CoA dehydrogenase异缬酰辅酶A脱氢酶isomorphism of linear spaces线性空间同构isosceles spherical triangle等腰球面三角形isobutyrylthiamine disulfide双异丁硫胺isovolumic relaxation period等容舒张期isologous idiotypic antibody同系个体基因型抗体, 同系个体遗传型抗体isometric surface coordinate等距曲面坐标