What's the purpose of triggering the fire sprinkler heads?

205 Đại Việt kiêu hùng - Chúa Nguyễn Phúc Chu đặt phủ Gia Định, dựng chùa Thiên mụ ở Phú Xuân

Đại Việt kiêu hùng

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Can ice bullets really withstand the high temperature of gunpowder and become invisible after being

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Yemen is the first country to be destroyed by drugs, even children are not spared. How tragic is it?

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Why do sprinkler heads keep knocking when irrigating farmland? #Science #Decompression #Irrigation #

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Introduction to Traditional Group Farming Culture in Africa

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