... packing material 释义：填充物,包装材料 annular material 释义：环状物质 medical material 释义：药材,卫生物资 ...
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annular separation material 环空封隔材料
Suits the long material, the plate, the annular material and the anomalous cargo memory.
适合长物料、板材、环型物料和不规则的货物存储。
The material used to permanently seal annular Spaces between casing and borehole walls.
用于永久封隔套管和井壁之间的环型空间的材料。
A plurality of vertically long annular blanks 3 are punched out from the material 2 having a prescribed width, and the vertically long annular blanks 3 are formed on the annular ring-shaped member 1.
由 给定宽度的坯料2冲压出多个长度方向长的环状的毛坯3，将该长度方向长的 环状的毛坯3成形为圆环状的环状构件1。
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