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Speleology
Speleology (also spelled spelæology or spelaeology) is the scientific study of caves and other karst features, their make-up, structure, physical properties, history, life forms, and the processes by which they form (speleogenesis) and change over time (speleomorphology). The term speleology is also sometimes applied to the recreational activity of exploring caves, but this is more properly known as caving, spelunking or potholing. Speleology and caving are often connected, as the physical skills required for in situ study are the same. Speleology is a cross-disciplinary field that combines the knowledge of chemistry, biology, geology, physics, meteorology and cartography to develop portraits of caves as complex, evolving systems.
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纖維飽和點
Construction; Carpentry
階段的乾燥或濕潤的纖維細胞壁飽和和細胞腔都是水的木材的免費。假定為 30%的水分含量,基於烘箱乾燥重量。收縮就會發生。當木降到了這一點。 ...