standard meridian

基本解释

Greenwich is known because Greenwich time, the time for the meridian of Greenwich, was, until 1968, standard time in Britain.
直到1968年，格林威治子午線時間是全英國的標準時間。
If your observing site is located in the east of the standard time meridian, set the E side graduation to the time meridian indicator.
如果你的觀測點位於標準時間子午線的東麪，則設定時間子午線標尺上位於E這邊的刻度。
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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.
標準米在應用上十分成功，雖然很晚時候人們才發現其長度比經線短了0.23毫米。

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