yo-weightWiktionary 原文英美/ˈjoʊ.wait/词源说明By analogy with the paired yo-yo weights similarly unreeled in the course of yo-yo despin.释义名词noun1(rocketry) A weight unreeled from a discarded rocket stage to unbalance the stage and cause it to tumble, preventing the stage's residual thrust from causing it to ram the payload that discarded the stage.