The level of the ocean's surface, especially the level halfway between mean high and low tide, used as a standard in reckoning land elevation or sea depths.
海洋表面的水位,尤其是在平均高水位和低水位之间的平均位置的水位,用作计算陆地海拔和海水深度的标准。
The generally accepted standard is 1020 watts per square meter at sea level.
普遍接受的标准1020在海平面每平方米瓦。
The generally accepted standard is 1020 watts per square meter at sea level.
普遍接受的标准1020在海平面每平方米瓦。
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