ul·lage [ˈʌlɪʤ] 名词 no pl
1. ullage:
- ullage
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2. ullage 航海:
- ullage
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单语范例（未经PONS编辑处理）
The fourth stage then coasted until one hour and fifty seconds after launch, when it fired its ullage motors in preparation for ignition.
en.wikipedia.org This reduces the oxygen concentration of the ullage to below the combustion threshold.
en.wikipedia.org Modern tanks are not fitted with ullage valves.
en.wikipedia.org On the ground, the space between the top of the propellant load and the top of the tank is known as ullage space.
en.wikipedia.org This causes the ullage fuel air ratio to increase rapidly and the ullage fuel air ratio to exceed the lower flammability limit.
en.wikipedia.org