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back emission

noun

  1. electronics the secondary emission of electrons from an anode
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


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Example Sentences

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

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

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

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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.

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“If the review process produced stronger standards . . . the action would help the US make modest additional progress in meeting the 2025 target. If the review were to weaken the current standard, it would set back emission reduction efforts considerably.”

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