英语词汇“underwriters' loop”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	underwriters' loop
释义	Underwriters' loop Hartford loop, Underwriters’ loop An arrangement of the return piping connections to a steam boiler; used to balance pressures between the supply and return sides of the boiler and thus prevent boiler water from backing out of the boiler and into the return.
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Underwriters' loop