| | 雙刀開關 double-pole switch | | 雙刃刀具 double-point tool | | 雙刃劍 rapier | | 雙刃帶鋸 double-cutting band saw | | 雙刃斧 double-bit ax | | 雙刃短劍 anlace | | 雙刃角鉆頭 double-chisel bit | | 雙列 biserial | | 雙動壓力機 double action press | | 雙動式蒸汽機 double-acting steam engine | | 雙動攪拌器 double motion agitator | | 雙動模 double acting die | | 雙動源車 dual-mode vehicle | | 雙動自止門 double action door | | 雙十二事變 Xi'an Incident | | 雙卷暗盒 double magazine | | 雙卷筒起網機 double-drum winch | | 雙歷手表 calendar day and date watch | | 雙雙 in pairs | | 雙雙對對 in pairs and couples | | 雙雙殉情 a double suicide for love | | 雙反射 bireflectance | | 雙反射器天線 two-reflector antenna | | 雙反射測角鏡 quadrant | | 雙反射鏡 double mirror |
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