Use the dissolved oxygen meter to measure dissolved oxygen in the water.

以溶氧量计测量水中的溶解氧量。

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Portable hand-held dissolved oxygen meter designed to provide measurements for the most critical water quality parameter.

便携式手持溶解氧仪设计提供了最重要的水质参数的测量。

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Carefully fill two sampling bottles completely with stream water. Use the dissolved oxygen meter to measure dissolved oxygen in the water.

小心地把两个取样瓶以溪水完全装满。以溶氧量计测量水中的溶解氧量。

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