二级指标评判  two grade index evaluation

二级指标评判融合  two-grade index evaluation integration

二指标二维Lorentz空间  two indexes two dimension Lorentz spaces

单位键指标-二次指数势(UBI-QEP)能学  UBI QEP(the unity bond index quadratic potential)Energytics; UBI-QEP(the unity bond index-quadratic potential)energytics

多目标二级优化  multi-objective bi-level optimization

二级标准  secondary standard

二级标准粘度液  secondary standard viscosity liquid

二指标马尔可夫过程  Two-parameter Markov process

过[氧]二碳酸二（二级丁酯）  di-sec-butyl perdicarbonate; di-sec-butyl peroxy-dicarbonate; di-sec-butyl peroxy-dicarbonate; di-sec-butyl perdicarbonate

空气质量二级标准  the grade-two of the national standard

十二级标格式  twelve-ordinate scheme

肥力分级指标  Soil fertility grading index; nutrient classification index

分级指标  Gradation index; classification index; classifying index; Criterion

分级指标光纤  Gradation; Gilbert

磷肥力分级指标  phosphorus classification index

目标级指令  object level instruction

评级指标  Evaluation index

评价分级指标  indicators for ranking

三级指标  the 3-grade indexes

养分分级指标  nutrient classification indexes