耳轴轴承：ball socketed bearing
二次加压：secondary water supply
二次设备：secondary equipment
二级触发：two-stage triggering
二交换法：wo-option algorithmi
二级代理：agent relationship at two levels
二次注浆：secondary grouting
二灰碎石：lime-fly ash macadam
二系悬挂：secondary suspension
二级悬河：secondary suspended river
二灰黄土：lime-fly-ash loess
二级蒸煮：Secondary cooking
二端网络：two-terminal network
二阶共振：second-order resonance
二维图样：two-dimensional drawing
二级消能：second class dispersion and diffusion
二次加权：twice-weighted method
二次接口：secondary interface
二期恒载：secondary dead load
二次服务：two-phase service
二次蓄水：second impoundment
二退二享："two returns and two having"
二维叶栅：two-dimensional cascades
二次稳定：quadratic stability
二外日语：Japanese as second language
二元语义：two-tuple linguistic
二图合一：two maps in one
二次停车：parking twice
二维地形：two-dimension topography
恶意主机：malicious host
二律背反：dilemma
二级公路：second-class highway
二重抽样：two phase sampling methods
二衬开裂：lining crack
恶劣工况：atrocious weather
二元共沸：binary azeotrope
二次转换：two times transfer
二维评价：matter element model
二维补偿：two-dimensional compensation
二维形式：2-D foam
额外维度：extra dimension
二次接线：secondary wiring
二叉搜索：dichotomous search
二维场地：2D Site
二维重建：two dimensional rebuilding
二次短网：low voltage short net
二次料场：blending yard
二轴参量：biaxial anisotropy
二阶射线：second rank ray
二阶方程：second order equation