It has been found from some investigations that TDS and hardness of drinking water correlate with the lethal rate of heart disease of the local population.
而且饮用水的硬度和总溶解性固体（TDS）和当地居民心脏病的死亡率有确定的正相关性。
It has been found from some investigations that TDS and hardness of drinking water correlate with the lethal rate of heart disease of the local population.
而且饮用水的硬度和总溶解性固体（TDS）和当地居民心脏病的死亡率有确定的正相关性。
应用推荐