体育: 双打队员;
土木工程: 双向板;two-way slab;双管制蒸汽热网;two-pipe steam heat-supply network;两向网架;two-way latticed grid;双曲拱桥;two-way curved arch bridge;两级管网系统;two-stage system;双向过闸;two-way transit;
大气科学: 双程衰减;two-way attenuation 波从发射源到目标物的路径上的衰减及由目标物回到接收器路径上的衰减之和。;
机械: 两相伺服电动机;two-phase servomo-tor 定子有两相绕组的交流伺服电动机。;两位控制器;two-step controller 具有两个离散输出值的控制器。;比色温度计;two-color [radiation] thermometer, ratio thermometer 检测两个不同有效波长光谱辐射亮度之比,实现温度测量的辐射温度计。;比色测温法;two-color thermometry 利用辐射体在两个不同波长光谱辐射亮度之比与温度之间的函数关系实现温度测量的方法。;
水产: 桁杆张网;stick swing net 网口装有上下桁杆的张网。;两片式拖网;panel trawl 网身由背、腹两片网衣构成的拖网。;竖杆张网;stick stow net 网口装有左右竖杆的张网。;
物理学: 二维电子气;two-dimensional electron gas;二能级系统;two-level system;二端网络;two-terminal network;双光子吸收;two-photon absorption;二流体描述;two-fluid description;双粒子格林函数;two-particle Green function;二体问题;two-body problem;双频激光器;two-frequency laser;双流不稳定性;two-stre;
电力: 两班制运行;two-shift cycling operation;两相接地故障;two-phase to earth fault;两相流;two-phase flow;二端口网络;two-port network;双绕组变压器;two-winding transformer;两相交混;two-phase mixing;两相运行;two-phase operation;