主体是圆盘形，比色杯放置孔为长方形， 比色杯放置孔与存放样本的比色杯相配合使用。
The main body is a round plate shape. The colorimetric cup placing holes which are rectangular are used for matching the colorimetric cups for storing samples.
主体是圆盘形，比色杯放置孔为长方形， 比色杯放置孔与存放样本的比色杯相配合使用。
The main body is a round plate shape. The colorimetric cup placing holes which are rectangular are used for matching the colorimetric cups for storing samples.
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