What would be the English for 公示？
公：public；示：notify
so, put these characters together, 公示means “to notify the public about some events or public decision” or "something that publicly notifies the population about some events" .

Thus, to your question, 公示 is a noun, "一出"is a verb means "release". And in your case, 公式was translated as "standard" which makes sense, because industry standard made by some public organization can be seen as "something that notify the public about some public decision".