electrochemical dissolved oxygen recorder

例句：

1. 1. The electrochemical dissolved oxygen recorder is used to measure the concentration of dissolved oxygen in water.
   电化学溶解氧记录器用于测量水中溶解氧的浓度。
2. 2. The electrochemical dissolved oxygen recorder was used to monitor the water quality in the river.
   电化学溶解氧记录器被用来监测河流中的水质。
3. 3.The electrochemical dissolved oxygen recorder is a useful tool for environmental scientists to study the impact of pollution on water quality.
   电化学溶解氧记录器是环境科学家研究污染对水质影响的一种有用的工具。