With the progress of the engine technology, the fuelinjectionsystems of modern engines are all electronic-controlled, instead of using traditional carburetor.
随着发动机技术的进步，化油器式发动机已经被电喷发动机所取代。
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It is stated that advanced control and diagnostic sensors play a key role in car antipollution devices such as catalytic converters, electronic fuelinjection, and exhaust-gas recycle systems.