rough cleaning
胚布初洗 grey washing
初洗槽 primary launder
初酸洗 lime sour ; black pickling ; [纺] preliminary sour
初选洗矿机 primary washer
初次酸洗 first pickling
最初的加压冲洗 initial surge
正值可洗式初效过滤器 washable filter
农历六月初六洗晒节 Bathing and Basking Festival
晓露鸦初洗，春荷叶半开。
Dew to wash the early crow, half open lotus leaf spring.
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