当喷入发动机的燃料被点燃之后，燃烧就自持下去。

After fuel sprayed into the engine has been ignited, combustion is self-sustaining.

youdao

当喷入发动机的燃料被点燃之后，燃烧就自持下去。

After fuel sprayed into the engine has been ignited, combustion is self-sustaining.

youdao