Adjective:

1. of or relating to or having the relation of an isotope

Isoup伊苏ISOabbr.国际标准化组织(=International Standards Organization)isoline-tracking等值线追踪isotherm recording等温线记录isometric parallel等比线iso-damage curve等毁伤曲线isoeugenol formate甲酸异丁子香酚酯isopulegyl acetate乙酸异胡薄荷酯Isothermal casting等温锻造isotypic variation同型变异isolaled hematuria单纯性血尿isodemographic map人口等位图

1. How could such a change in isotopic composition have come about?
   同位素的组成有这样的变化，究竟是如何发生的？
2. Conversely,the isotopic characteristics will be well explained by assuming that the UHPM occurred in the crust instead in the upper mantle.
   相反，如果认为大别山超高压变质岩就在地壳内形成，则大别山超高压变质岩同位素的所有特征就很好解释了。