两相压力降    two-phase pressure drop

两相区    two-phase region

两相雷诺数    two-phase Reynolds number

两点刻度法    two-point calibration

两路夹击灭火    two-position attack

两位开关    two-position switch

二位三通    two-position three way

双价制    twoprice system

双叉抓斗    two-pronged grab

二辉麻粒岩    two-pyroxene granulite

两级流量压降试井    two-rate falloff test

两级流量注入测试    two-rate injection test

双螺杆泵    two-screw pump

二班制    two-shift

双边    two-sided

双边滤波器    two-sided filter

双边最小平方反滤波器    two-sided least-squares inverse filters

双边算子    two-sided operator

双侧检验    two-sided test

两边性    twosideness

两档传动    two-speed drive

双组防喷器装置    two-stack blowout-preventer system

两级放大器    two-stage amplifier

双级注水泥    two-stage cementing

两级转换器    two-stage converter

两级过滤    two-stage filtration

双级烟气轮机    two-stage flue gas expander

二级齿轮传动装置    two-stage gearing

两步聚合    two-stage polymerization

两步再生法；两浴再生法    two-stage regeneration process

二级旋转式空气压缩机    two-stage rotary air compressor

双级单作用压缩机    two-stage single-acting compressor

二级固定式空气压缩机    two-stage stationary air compressor

两步串联假捻机    two-stage tandem false twister

两级螺纹封隔器    two-stage thread packer

两段式管状柱塞流反应器    two-stage tubular-flow plug-reactor

两步法    two-step approach

两级导丝盘    two-step godet

两步麦储波利斯规则    two-step Metropolis rule

二冲程发动机    two-stroke engine

重色    two-tone

双管双层分采完成井    two-tubing dual completion well