二段热处理：two-step heat treatment
二阶段喷雾：two-stage injection
二次侧电流：Secondary current
二维谱分析：two-dimensional spectrum analysis
二次开发库：second developed library
二次放行点：redispatch point
二次钙矾石：Secondary or subsequent ettringite
二次双代数：quadratic bialgebras
二次通风管：secondary air
二次风刚度：secondary air stiffness
厄密多项式：hermite polynomials
二阶中心矩：second-order central moment
二维DWT：two-dimensional DWT
二异丁基碲：diisobutyl
二级粉煤灰：Ⅱ fly ash
二圆定位法：Double circle orientation
二进制流玛：bit flow
二级水电站：second cascade hydropower station
二阶矩解法：Second moment approximation
二氯乙基铝：AlEtCl_2
二维铁磁体：Planar ferro magnet
二维近似熵：two-dimensional approximate entropy
二维可压缩：two-dimensional compressibility
二次风系数：coefficient of second air
二次型距离：quadratic distance
二齿齿轮泵：two_teeth gear pump
二灰土垫层：lime-flyash-soil cushion
二次流旋涡：secondary flow vortices
二项式方法：binomial approach
二重逆散射：double inverse scattering
二项式期权：binomial option
二相码信号：biphase coded signal
二叉树计数：count problems of binary tree
二灰土基层：Soil Lime Flyash Base Course
二级诊断法：two-grade diagnosis approach
二维CAD：D CAD
二阶段生产：two-stage production
二阶投影法：second-order projection method
二阶右导数：quadratic factorial right derivative
二次梁理论：second beam theory
二维零件图：2D part drawing
额定电流比：rated transformation ratio
二维多义线：two dimensional polyline
二氧化锡膜：SnO2 films
二灰改良土：Lime-flyash-improved soil
二次风调节：secondary air regulation
二阶分块阵：A2 block matrix
二硫酚锌盐：Zinc-bithionol
二进制数据：binary data
二维多项式：2 D polynomials