英语词汇“世界協定時”的翻译、意思、用法、释义-英汉汉英双解词典

词汇	世界協定時
释义	世界協定時 shì jiè xié dìng shí由于地球自转速度会越来越慢，故须以利用铯原子振荡周期算出的「原小时」来修正误差，作为世人使用的标准时间，称为「世界协定时」。目前由设在法国巴黎的国际地球自转中央局发布。
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