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dust layer
污化层
在冰川或雪坑内,用肉眼可观测到的暗色杂质层,主要为大气颗粒物通过干、湿沉降沉积于冰川表面后聚集形成,杂质层在冰川垂直剖面有规律的呈层状分布的冰层。
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international atomic time
International Atomic Time, Temps Atomique International(法), TAI
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International Badminton Federation
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International Biennial of Graphic Design Brno
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International Biological Programme
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International Bocce Federation
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International Book Festival Budapest
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