Winnowing

Chinese rotary fan winnowing machine, from the Tiangong Kaiwu encyclopedia (1637) by Song Yingxing

Le vanneur (The Winnower) by Jean-François Millet, a 19th-century depiction of winnowing by fan

Wind winnowing is an agricultural method developed by ancient cultures for separating grain from chaff. It is also used to remove weevils or other pests from stored grain. Threshing, the loosening of grain or seeds from the husks and straw, is the step in the chaff-removal process that comes before winnowing.

单词	Winnowing fan
释义	Winnowing fan 英语百科 Winnowing Wind winnowing is an agricultural method developed by ancient cultures for separating grain from chaff. It is also used to remove weevils or other pests from stored grain. Threshing, the loosening of grain or seeds from the husks and straw, is the step in the chaff-removal process that comes before winnowing.
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Winnowing fan

Winnowing