二次有限元：Quadratic finite element
二阶矩宽度：mean-squared width
二次无理数：quadratic irrational number
二次极化率：second-order susceptibility
二阶段博弈：Two-period game model
二叉叶蝉属：Macrosteles
二次非线性：second-order nonlinearity
二碘荧光黄：Diiodofuorescein
二元外代数：exterior algebra in two variables
二进制位串：binary string
二阶段估计：Two stage estimator
二手车价值：used car value
二次可积性：quadratic integrability
二重连整数：Dual Consecutive Number
厄米特曲线：Hermitian curves
二分内插法：bipartite interpolation
俄语术语学：Russion ternistics
峨嵋岩白菜：B.emeiensis
二维颗粒床：the two-dimensional particulate matter
二阶偏导数：Two-order-partial derivative
鄂西-渝东：Western Hubei-Eastern Chongqing Area
二甲基硼烷：dimethylaminoborane
二维声图像：two-dimension echo image
二叠纪末期：latest permian
二次幂变差：Bi-power Variation
二阶方程组：second-order systems
二正则函数：2-regular functions
二能级模型：Two-level model
二阶锥优化：second-order cone optimization
额外氧效应：extra oxygen effect
俄罗斯女排：Russian Woman Volleyball team
二元函数芽：function germs of two variables
二次超谐波：second super-harmonic
饵料单胞藻：food algae
二维线条片：2D line drawing
二维MHD：2D MHD
二维颗粒流：two-dimensional granular flow
二进制分解：dyadic decomposition
二次边际化：secondary marginalization
二棱镜系统：two-prism sequence
二重网格法：two-grid method
恶性资费战：malign price war
二进制数码：binary system code
峨眉菊三七：G.emeiensis Z.Y. Zhu
二维潮流场：two-dimensional tidal current field
二级微扰论：second-order perturbation theory
二维联系数：Two Dimengion Connection Number
二相流理论：two-phase flow theory
二滩玄武岩：Ertan basalt
二长闪长岩：monzodiorite