二星定位：Dual-Satellite location
饵料系数：feed coefficient
额外工作：extra work
二重趋势：dual trend
二次定比：dual proportion
二元模型：dualistic evolutionary model
二次覆盖：double cover
二次估计：quadratic estimate
二次催化：double catalysis
二元相关：bivariate dependence
二次寻优：secondary optimization
二维磁场：2-D magnetic field
二次差分：Second-difference
二级回火：second annealing
二路供电：two way power supplies
二级升降：two grade of ascend and descend
二维场景：2D virtual environment
二手交易：second-hand transactions
二层地址：L2 address
二次托换：second underpinning
二元颗粒：binary particles
二次防护：secondary protection
二重叶栅：cascade
二次冶金：Secondary Metallurgy
耳石器官：Otolith organs
二维布局：two-dimensional layout
二部带宽：bisection width
二次压板：secondary pressure plate
二期荷载：secondary loads
二维纹理：2D texture
二模热备：Dual Modular Redundancy(DMR)
二级冲击：the second-class impact
二次混凝：second coagulation
二布一膜：complex geomembrane
二次动作：two movements
二阶逼近：second-order approximation
二衬检测：secondary lining detection
二线海堤：secondary dike
额木尔河：Emuer River
二阶运动：secondary motion
儿童安全：children's Safety
二次抗渗：secondary impermeability
二次找形：second shape finding
二次插值：quadric interpolation
二阶过程：second order processes
二重估计：two-fold estimation
二次导线：secondary wiring
二次失压：secondary voltage Loss
二乘圆心：Least square center
耳蜗铺片：surface preparation