- This paper introduces the principle and the design of the double gate gate-ban system of defending to rob by tailing behind.
- Design of Parallel Double Gate Valve
- It is unusual because it has double gates and rooms in order to honor both gods.
- Guards stood by the entrance, though the double gates were wide open and large enough for two or even three wagons to pass abreast.
- Double Disk Parallel Gate Valves.
- He is working double tides to finish his essay.