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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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下水道分支

Fire safety; Prevention & protection

娛樂車輛公園和露營地,從多個污水渠側接收排放的污水渠系統的那部分。

邊坡

Fire safety; Prevention & protection

娛樂汽車、 等級或行管提一個水平面的秋天。

粘接

Fire safety; Prevention & protection

為了坦克條目、 清洗、 或維修,以形成導電的路徑,以確保電氣連續性和進行安全地可能施加任何電流能力的金屬零件的加盟。

清除

Fire safety; Prevention & protection

為目的的坦克條目、 清洗,或修復、 取代蒸氣或氣體從存儲模組或密閉的空間的過程。

醫療空氣

Fire safety; Prevention & protection

此標準的醫療空氣的目的,是提供從空氣筒、 大容量的容器,醫用空氣壓縮機,或已經重組從氧 USP、 無油、 乾燥氮 NF。

美國計畫

Labor; Labor relations

郵政世界大戰雇主運動,強調自由的產業來管理其業務不受干擾的聯盟。

代理店

Labor; Labor relations

聯盟安全條款,使談判單位的所有成員必須都支付服務費用,相當於會費,不論他們是工會成員。

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