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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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浪湧保護

Electrical equipment; Motors

電容器設備通常安裝在管道框以拼合的電壓濤聲照明的結果可能發生或電湧供應 (短週期峰值)。這些潮可能導致超過兩次去線圈的額定電壓和反過來造成纏繞的損害。 ...

同步電動機

Electrical equipment; Motors

設有恆定速度達滿負荷的電機。轉子轉速等於定子旋轉磁場的速度 ; 有沒有名單。有兩個 2 主要類型不願和永磁同步電動機上。同步電動機通常用於必須得到準確的電動機的速度。 ...

安全期

Health care; Women’s health

化學水母、 泡沫、 面霜、 或栓,插入到之前,殺死精子的性交陰道。

殺蟲劑

Health care; Women’s health

用來控制或殺死昆蟲的化學物質。

周圍神經病變

Health care; Women’s health

涉及的疾病分類損壞或毀壞的神經。的腦部或脊髓神經不包括這些障礙。

羊水

Health care; Women’s health

在懷孕期間周圍未出生的嬰兒 (胎兒) 的明確、 微黃色液體。,它包含在羊膜囊。

mutineer

Boat; General boating

參與兵變的人。

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