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集群灭绝
释义
集群灭绝
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理学
古生态学
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mass extinction
集群灭绝
在一个相对短暂的地质时期内(通常不足100万年)及一个较广的地理范围内(通常是一个以上的地理大区),整个生态系统的多样性和个体数量出现突然的、异常的、大幅度的下降,甚至是遭受毁灭性的打击。
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underground space survey
Underground Spring Trilogy
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underground stope arrangement optimization
underground storage and facility
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underground stormwater storage tank
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underground substation
underground survey
underground tank
underground thermal energy storage
underground thermal pollution
underground town of Japan
underground trackless auxiliary vehicle
underground track transportation
underground traffic tunnel of Zhongguancun West District
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