period of frost free的意思|示意
无霜期
period of frost free的网络常见释义
无霜期 ... 无霜冻 free of frost 无霜期 frost free period; frost free season; frost-free days (period); frost-free growing season; frostfree season; frost-freedays（period）; frost-proof date; frostless season; period of frost free 无霜日 day free of frost; day without frost ...
period of frost free相关短语
1、 duration of frost-free period 无霜期
2、 length of frost free period 无霜期间