| 雙向信道 two-way channel |
| 雙向加速器 two-way accelerator |
| 雙向同步加速器 two-way synchrotron |
| 雙向天線 bilateral antenna |
| 雙向對流 bilateral flow |
| 雙向開關 a two-way switch |
| 雙向性傳導 conduction in double directi... |
| 雙向拉伸機 biaxial orientation stretchi... |
| 雙向排水 double drainage |
| 雙向操作 bidirectional operation |
| 雙向無線電通信系統 two-way radio system |
| 雙向測向計 double goniometer |
| 雙向犁 hillside plough |
| 雙向電動機 reversing motor |
| 雙向電流 bidirectional current |
| 雙向電視 the two-way television |
| 雙向電話 two-way telephone |
| 雙向軌制 the dual-track pricing syste... |
| 雙向選擇制度 two-way choice system |
| 雙向通信 two-way communication |
| 雙向通道 duplex channel |
| 雙向采煤 bidirectional cutting |
| 雙向飛碟射擊 skeet shooting firing |
| 雙吸泵 double entry pump |
| 商業性漁業 commercial fishery |
