• The standard meter fulfilled its duty perfectly, although its length has been found much later too short by 0.23mm with respect with the meridian.

    标准在应用上十分成功虽然时候人们才发现长度经线0.23毫米

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  • Greenwich is known because Greenwich time, the time for the meridian of Greenwich, was, until 1968, standard time in Britain.

    直到1968年,格林威治子午线时间英国标准时间

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  • Greenwich is known because Greenwich time, the time for the meridian of Greenwich, was, until 1968, standard time in Britain.

    直到1968年,格林威治子午线时间英国标准时间

    youdao

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