与潮汐的简单观测不大相同，潮流研究的难度既大、费用也巨。
In contrast to the simple observations of the tides, tidal current studies are difficult and expensive.
观测数据分析表明徐六泾处大潮流速及其变化远大于小潮流速。
The observation data show that the spring tide current and its variations are much larger than those of the neap tide.
该观测为了解吕宋海峡深层海洋的潮流、近惯性运动以及海峡水交换提供了第一手的资料。
These observations provide first-hand data for studying tidal currents, near-inertial oscillations and water exchange between the South China Sea and the Pacific nearby the Luzon Strait.
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