helium tank

例句：

1. 1. The helium tank was filled with a small amount of gas.
   氦气罐被填充了一小量气体。
2. 2. The helium tank is essential for the operation of the spacecraft.
   氦气罐是航天飞机运行所必需的。
3. 3. The helium tank was used to cool down the engine during the flight.
   氦气罐在飞行中用于冷却发动机。