... 螺旋状的岩心 corkscrew core 绕成螺旋状的 helically wound 以各部分螺旋状排列的 spiral arrangement ...
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所述旋转刷包括多根呈放射状排列的刷毛，所述刷毛位于至少一个梳状毛条上，所述梳状毛条卷绕成螺旋状并固定。
The rotary brush comprises a plurality of radiating brush hairs which are arranged on at least one pectinate wool top; the pectinate wool top is winded into a spiral shape and fixed.
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