| 单词 |
nansen bottle |
| 释义 |
Nansen bottle
Nansen bottlen. An ocean-water sampling bottle with spring-loaded valves at both ends that are closed at an appropriate depth by a messenger device sent down the wire connecting the bottle to the surface.
[After Fridtjof Nansen.]Nansen bottle n (Physical Geography) an instrument used by oceanographers for obtaining samples of sea water from a desired depth [C19: named after F. Nansen]Nansen bottle
Nansen bottle[′nan·sən ‚bäd·əl] (engineering) A bottlelike water-sampling device with valves at both ends that is lowered into the water by wire; at the desired depth it is activated by a messenger which strikes the reversing mechanism and inverts the bottle, closing the valves and trapping the water sample inside. Also known as Petterson-Nansen water bottle; reversing water bottle. |
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