In a rocket engine, fuel and a source of oxygen, called an oxidizer, are mixed and exploded in a combustion chamber. The combustion produces hot exhaust which is passed through a nozzle to accelerate the flow and produce thrust.
Source: tatoeba (5325815)
In a liquid rocket, the propellants, the fuel and the oxidizer, are stored separately as liquids and are pumped into the combustion chamber of the nozzle where burning occurs.
Source: tatoeba (5325818)
No spray is coming out because the nozzle is clogged.
Source: tatoeba (9032593)
The app will take care of the payment, but somebody — in most states, the driver — still has to get out and manually insert the fuel pump nozzle into the car's gas tank.
Source: tatoeba (10789694)
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