锯过木头后留下的锯缝就叫做kerf。
That slot left in the wood after a saw goes through is called the kerf.
单位锯通常用来提供伸缩缝，清除路段路面损坏、清洁保养修理随机裂缝、清除混凝土路段拆除。
Flat saws are typically used to provide expansion joints, remove damaged pavement sections, clean and repair random cracks for repair, and remove concrete sections for demolition purposes.
当前一些直缝焊管机组所配备的垂直进锯型飞锯因易造成切断端面严重变形，不适合锯切正位生产的方矩型类管材。
The vertical feed fly saw, equiped on most straight welding pipe sets, can not be suitable to cut square shaped pipes because of serious deformation on the cut face.
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