secchi depth 中文意思是什麼
secchi depth
解釋
塞克盤深度-
Slowly lower the secchi disk into the water until it disappears, and note the depth
一個黑白相間既圓板,水平放入水底,慢慢下降,直到完全睇唔見,立即記下水深 -
Secchi disc depth
沙奇盤深度
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