Secchi

基本解释

Slowly lower the secchi disk into the water until it disappears, and note the depth.
一个黑白相间既圆板;水平放入水底;慢慢下降;直到完全睇唔见;立即记下水深.
Assessing Secchi and Photic Zone Depth in the Baltic Sea from Satellite Data
利用卫星数据估算波罗的海的透明度和透光层深度
Evaluation of Secchi Disk Transparency by Using Field Spectral Measurements in Nanhu Lake, Changchun
长春南湖水体透明度高光谱定量模型研究
On the relationship between the outcome of secchi disc depth and rays on the spot
浅谈地表水透明度监测结果与现场光线的关系
Secchi rs classification
塞齐分类法