| 1. | Design and realization of digital pilot balloon theodolite system
数字测风经纬仪系统的设计和实现 |
| 2. | Launching of pilot balloon at the observatory in the early years
图2一班工作人员早期在天文台施放测风气球 |
| 3. | Pilot balloon observations
气球测风： |
| 4. | Pilot balloon theodolite
测风经纬仪 |
| 5. | Pilot balloons were filled with suitable amount of hydrogen to give an ascent rate of approximately 150 metres per minute throughout the flight
测风气球充以适量氢气，使气球上升速度在整个探空过程中固定在每分钟150米左右。 |
| 6. | A pilot balloon figure 1 was filled with hydrogen for flight . at the observatory main building figure 2 , a theodolite was set up on the roof to track the balloon
测风气球图1充以适量氢气来上升，并由天文台总部图2屋顶的一部经纬仪追踪。 |
