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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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破壞性測試
Semiconductors; Semiconductor quality
測試嚴重程度作出進一步的示例使用的有疑問的測試設備。受到的破壞性測試的設備可能無法實際銷毀,但足夠退化不應在任何系統中使用。 ...
正態分佈
Financial services; General Finance
眾所周知的鈴形曲線。據中心極限定理,獨立的大量的概率密度函數具有相同的分散式的亂數字,將接近正常分佈。分佈的分形族,正態分佈只存在 alpha 等於 2,或赫斯特指數等於 0.50 時。因此,正態分佈 是一種特殊情況的時間序列分析中是罕見的。請參閱 : Alpha,中心極限定理,分形分佈。 ...