back emission

noun

1. electronics the secondary emission of electrons from an anode

Example Sentences

Under President Donald Trump, from opening drilling in the Arctic National Wildlife Refuge to rolling back emission standards, we’ve gone backward.

From Seattle Times

The same month the EPA aggressively rolled back emission standards for vehicles.

From Washington Times

The Trump administration plan aims to roll back emission standards set by former President Barack Obama.

From Reuters

The Trump administration plan aims to roll back emission standards set by former President Barack Obama.

From Reuters

And with President Trump poised to try to roll back emission standards for cars and trucks, the stakes for state action on transportation have never been higher.

From Scientific American