海水盐度计算问题,如何从常用单位转化为ppm?下面这句话中200ppm是如何换算出来的?Notice that the range of salinity for most of the ocean's water is from 34.60 to 34.80 parts per thousand,which is 200 parts per million.【大洋海水的平均盐度是35,即每千克大洋水中的含盐量为35克.】

海水盐度计算问题,如何从常用单位转化为ppm?
下面这句话中200ppm是如何换算出来的?Notice that the range of salinity for most of the ocean's water is from 34.60 to 34.80 parts per thousand,which is 200 parts per million.【大洋海水的平均盐度是35,即每千克大洋水中的含盐量为35克.】