| 双重课税 double taxation |
| 双重运费制 dual rate system |
| 双重金价制 two-tier glod price system |
| 双重领导 dual leadership |
| 双重领导制度 system of dual leadeship |
| 双重馈电 duplex feeding |
| 双重黄金价格 two-tier gold price |
| 双重黄金市场 two-tier gold market |
| 双金属 thermometal |
| 双金属板 bimetallic plates |
| 双金属片 bimetal leaf |
| 双金属片电容器 bimetallic capacitor |
| 双针秒表 split-seconds chronograph |
| 双钩藤 ramulus uncariae rhynchophyl... |
| 双铧犁 double-shared plough |
| 双链 double strand |
| 双链绞结 elbow in haws |
| 双链聚合物 double-chain polymer |
| 双链霉素 streptoducin |
| 双锥 bipyramid |
| 双锥体 bicone |
| 双锥天线 biconical antenna |
| 双锥密封环 double-cone seal ring |
| 双锥形反射器 biconical reflector |
| 双锥形天线 double-cone antenna |
