其部分原因是涡轮螺旋桨飞机结构坚固，部分原因是“空中拖拉机”公司生产的油箱有多层橡胶密封，一旦子弹射穿油箱，橡胶层就会自动封闭住弹孔，减缓燃油的渗漏。
In part this is because of the turboprops' robust design, and in part because Air Tractor's fuel tanks have rubber membranes which close around bullet holes to slow leaks.
多年来对溢流坝不断加固治理以及灌浆防渗，但是渗漏仍不能遏止，溢流坝混凝土的破坏速度仍未能减缓。
The leakage still can not be prevented by the spillway reinforcing treatment and grouting impervious for many years, the damage speed of the spillway concrete still fails to slow down.
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