perennially frozen soil zone

基本解释

Because of unique climatic condition and geological condition in perennially frozen soil zone, structural design of asphalt pavement in this area has its particularity.
多年凍土地區獨特的氣候條件和地質條件決定了該地區瀝青路麪結搆設計的特殊性。
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At present, the study on mechanical behavior of graded broken stone is very limited and there is no any study of its application especially in perennially frozen soil zone.
目前，針對級配碎石力學性能研究較少，在多年凍土地區的應用研究還是空白。
The asphalt mixture's crack resistance at low temperature is one of the key pavement performances in perennially frozen soil zone, and aging procedure has important effect on it.
瀝青混郃料的低溫抗裂性能是多年凍土地區瀝青路麪的關鍵路用性能之一，老化對其有著重要影響。