... 冻面 frost table 无霜季 frost-free season 霜点湿度计 frost-point hygrometer ...
基于12个网页-相关网页
frost free season 无霜期
length frost-free season 无霜期长度
The Frost-Free Season 无霜期
length of frost free season 无霜期间
frost-free growing season 无霜期
·2,447,543篇论文数据，部分数据来源于NoteExpress
Over centuries, Manchurian ancestors lived in Northeast China of short frost-free season with fishing and hunting being their main economic sources instead of planting.
满族先祖长期生活在无霜期短的东北，初以少种植、多渔猎为主要经济来源。
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