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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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簽出常式
Medical devices; Radiology equipment
一系列步驟,通過該控制系統移動某個給定的軸,以驗證它工作正常。軸特定的簽出常規驗證所有的感測器操作正確 ; 使用準確的軸和正確 (回家),其範圍的議案是正確的它不需要多餘的扭矩 ; 和小學和中學的讀數同意,指示他們有零參考位置是沒有機械或電氣的位置錯誤。 ...
檢查週期
Medical devices; Radiology equipment
可以啟動內部程式控制的測試控制器的劑量計數器的操作測試和驗證劑量測定聯鎖的常式。校準週期後立即發生。請參閱校準週期。
異構化
Science; General science
重排反應烴分子內原子。異構化流程的石油化學中的現實意義是 (1) 遷移烷基集團、 中環烷烴,單碳債券的轉變 (2) 和 (3) 雙鍵烯烴的轉變。 ...
magnoliopsida
Science; General science
這兩個類的共同組成了司 Magnoliophyta (被子植物) 開花植物之一。Magnoliopsida,通常稱為州雙子葉或雙子葉植物、 擁抱 6 子類、 64 訂單、 318 家庭和約 165,000 ...