知道海水的盐度和大致的水量之后，他计算出了海水中已经存在的盐的量。
Knowing the salinity of ocean water and the approximate volume of water, he calculated the amount of salt already held in solution in the oceans.
但是海水的盐度影响它的重要及冰点。
The salinity of sea water affects both its weight and freezing point.
电波穿透海水的距离取决于电波的频率和海水的盐度。
The radio signals ability to penetrate water depends of the frequency and the salinity of the water.
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