drought ring
英 美
旱轮
... drop sorter 降落式选材装置 drought ring 旱轮 drum barker 滚筒剥皮机 ...
Using it, he has built up a series of tree-ring chronologies from Thailand and Vietnam that indicate a period of severe drought across mainland South-East Asia in the early 1400s.
使用这个标记,他已经建立了从泰国和越南的一系列树木年轮年表,以表明在十五世纪早期横贯大陆和东南亚的一段严重的干旱期。
Record of Drought and Flood Series by Tree-Ring Data in the Middle Section of Qilian Mountain Since 904 A. D.
祁连山中部公元904年以来树木年轮记录的旱涝变化。
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