“permafrost region of northeast China”的概念、定义、翻译、参考文献-科学参考

单词	permafrost region of northeast China
释义	permafrost region of northeast China Encyclopedia 理学中国的冻土释 permafrost region of northeast China东北多年冻土区位于欧亚大陆多年冻土区的南缘地带，面积约39万平方千米，介于北纬46°30′～53°30′，海拔几百米至1000米上下。冻土年均温度（指地温年变化层底部的温度）大多在-1.5～0℃，最低-4.2℃；地温年变化深度12～16米。冻土厚度亦随纬度降低而减小，大多在50米以下，最厚达百米。
随便看	Hartwig crater HART协议 Harun Hashim Rashid Harvard Annual harvard architecture Harvard Art Museums Harvard Bulletin Harvard Business School Case Bank Harvard Circular Harvard classification Harvard College Observatory Harvard Library Harvard Peabody Museum of Archaeology and Ethnology Harvard Photometry Harvard pulsar Harvard red book Harvard Region Harvard Revised Photometry Harvard-Smithsonian Center for Astrophysics Harvard-Smithsonian Reference Atmosphere Harvard Standard Region Harvard structure Harvard University Harvard University research team Harvard variable

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