cleansing
sự lọc sạch
cleansing, purification, refining
sự lọc sạch
cleanout opening, cleanse, cleansing
khe hở làm sạch
cleaning of structural products, cleansing, clearance, clearing, defecation, fining, flush, flushing, liming, purge, purging
sự làm sạch thành phẩm kết cấu