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active layer (In environments containing permafrost, the active layer is the top layer of soil that thaws during the summer and freezes again during the autumn.: Permafrost is soil, rock or sediment that is frozen for more than two consecutive years. In areas not overlain by ice, it exists beneath a layer of soil, rock or sediment, which freezes and thaws annually and is called the "active layer"  wikipedia.org) | |||
| active layer | |||
| sweep zone | |||
| auftauboden | |||
| effective layer; emission coating | |||
| активный слой: 37 phrases in 17 subjects |