體育: 雙打隊員;
土木工程: 雙向板;two-way slab;雙管制蒸汽熱網;two-pipe steam heat-supply network;兩向網架;two-way latticed grid;雙曲拱橋;two-way curved arch bridge;兩級管網系統;two-stage system;雙向過閘;two-way transit;
大氣科學: 雙程衰減;two-way attenuation 波從發射源到目標物的路徑上的衰減及由目標物回到接收器路徑上的衰減之和。;
機械: 兩相伺服電動機;two-phase servomo-tor 定子有兩相繞組的交流伺服電動機。;兩位控制器;two-step controller 具有兩個離散輸出值的控制器。;比色溫度計;two-color [radiation] thermometer, ratio thermometer 檢測兩個不同有效波長光譜輻射亮度之比,實現溫度測量的輻射溫度計。;比色測溫法;two-color thermometry 利用輻射體在兩個不同波長光譜輻射亮度之比與溫度之間的函數關系實現溫度測量的方法。;
水產: 桁桿張網;stick swing net 網口裝有上下桁桿的張網。;兩片式拖網;panel trawl 網身由背、腹兩片網衣構成的拖網。;豎桿張網;stick stow net 網口裝有左右豎桿的張網。;
物理學: 二維電子氣;two-dimensional electron gas;二能級系統;two-level system;二端網絡;two-terminal network;雙光子吸收;two-photon absorption;二流體描述;two-fluid description;雙粒子格林函數;two-particle Green function;二體問題;two-body problem;雙頻激光器;two-frequency laser;雙流不穩定性;two-stre;
電力: 兩班制運行;two-shift cycling operation;兩相接地故障;two-phase to earth fault;兩相流;two-phase flow;二端口網絡;two-port network;雙繞組變壓器;two-winding transformer;兩相交混;two-phase mixing;兩相運行;two-phase operation;