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Theatre
Secchi

Secchi disc [ˈsekɪˌdɪsk] 名词

Secchi disc
Secchi-Scheibe (Sichttiefenmessung)

water transparency, Secchi depth [ˈsekɪˌdepθ] 名词

water transparency
Sichttiefe (Sichttiefe nach Secchi)

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单语范例（未经PONS编辑处理）

Turbidity has been measured at 13 centimetres by the Secchi disc method.
en.wikipedia.org
A secchi disc, an object used to measure water transparency, can be seen as far down as 35 meters below the surface.
www.mnn.com
A Secchi disc is an instrument used to measure how deep a person can see into the water.
millstonenews.com

互联网提供的例句（未经PONS编辑处理）

[...]
The waters of Lake Fuschl has drinking water quality and water transparency is up to about 6m.
[...]
www.biketours4you.at
[...]
Das Wasser des Fuschlsee hat Trinkwasserqualität und die Sichttiefe beträgt bis zu ca. 6m.
[...]
www.biketours4you.at
[...]
Since 1962, a team of AWI researchers has sampled the Helgoland Roads time series station off the island ’ s coast on a work-daily basis to measure water temperature, salinity, water transparency and nutrient levels. The plankton that serve as food for marine fauna is also sampled.
[...]
www.helmholtz.de
[...]
Seit 1962 nimmt ein AWI-Team vor Helgoland an der Helgoland Reede täglich Wasserproben, misst Temperatur, Salzgehalt und Sichttiefe und untersucht den Gehalt an Nährstoffen und Plankton, das als Nahrungsgrundlage für die marine Fauna dient.
[...]
www.helmholtz.de
[...]
At the inspection site, water transparency, pH-value and oxygen saturation are measured and the beaches are examined for visible contamination.
[...]
www.wien-vienna.at
[...]
Bei der Entnahme werden Sichttiefe, pH-Wert und Sauerstoffsättigung vor Ort gemessen und es werden die Badestellen auf sichtbare Verunreinigungen überprüft.
[...]
www.wien-vienna.at

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