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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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泰伊裡弗
Water bodies; Rivers
泰伊河是 35.4 英里長的中央在美國弗吉尼亞州的詹姆斯河支流。原產永新縣藍脊山的東斜坡和美聯儲的 Piney 和水牛的河流,詹姆斯河的方式,它是切薩皮克灣的分水嶺的一部分。 ...
差異
Earth science; Mapping science
當只有一個值的該數量預計數量相同的兩個值之間的區別。尤其是 (a) 一重複或類似措施的數量 ; 結果之間的差異(b) 差異計算值的數量 ;或者 (c) 在計算的值的差異的獲得的不同進程使用同一項調查的資料的數量。示例有: 在同一行中 ; 或數額的有一個三角形的第三個點的位置的值計算從其他兩個點,可能會無法同意當值尚未糾正的中線閉合差的兩項措施的長度差異。差異 ...