Geochemical characteristics of two types of gabbro suggest that their formation environment is an oceanic ridge of low spreading rate.

两类辉长岩的地质地球化学特征表明它们可能形成于慢速扩张的洋脊环境。

youdao

Based on the global numerical ocean models, the contributions of nontidal oceanic mass change to the seasonal variations in the low-degree Earth's gravitational field are estimated.

基于全球海洋数值模式，估计了海水质量非潮汐变化对低阶地球引力场季节性变化的贡献。

youdao

Several times during the summer of 1997, the U. S. National Oceanic and Atmospheric Administration recorded an ultra-low frequency underwater sound using U. S. Navy "spy" sensors 3,000 miles apart.

1997年夏天，美国国家海洋大气局使用美国海军“间谍”探测器记录下了一段3000英里外水下的超低频声音。

youdao

"Usually when you see reports like this (of a dolphin trapped in low water) it means the animal is injured, " Allison McHale of the National Oceanic Atmospheric Administration said Friday.

CNN: Rescuers: Dolphin stranded in polluted New York canal dies