| 单词 | secchi depth |
| 释义 | Secchi depthnounthe depth at which a Secchi disk is no longer visible from the surface of ocean water. Words nearby Secchi depthSECAM, secant, secateurs, Secaucus, Secchi, Secchi depth, Secchi disk, secco, secede, secern, Secernentasida Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Scientific definitions for Secchi depthSecchi depth [ sĕk′ē ] A measure of the clarity of water, especially seawater. Secchi depth is measured using a circular plate, known as a Secchi disk, which is lowered into the water until it is no longer visible. High Secchi depths indicate clear water; whereas low Secchi depths indicate cloudy or turbid water. See also Secchi disk. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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