Just to confirm what Mary posted, an output contract is an agreement under which A agrees to purchase everything that B can produce. It's normally seen in manufacturing and perhaps agriculture (A will buy all the crops that B can harvest).
We don't need any context because that's simply what "output contract" means:
https://legal-dictionary.thefreedictionary.com/Output Contra... "Output contracts are a special type of contract that concern the sale and purchase of goods.... the buyer will buy all of an item that the seller can produce....
Another similar type of contract for the sale of goods is called a requirement contract.... While output contracts are agreements for the buyer to purchase all of an item that the seller can supply, requirement contracts are agreements for the seller to sell as much of an item as the buyer requires."
https://www.legalmatch.com/law-library/article/what-is-an-ou... That said, context could help if there is no equivalent FR term and we need to resort to an explanatory translation.