| http://www.w3.org/ns/prov#value | - In general, the fine fibers passed through the nozzle are prone to be entangled, if the fiber diameter of the fine fibers passed through the nozzle is as thin as 4 ??m or less, particularly 2 ??m or less, and thus have a low rigidity, i.e., high pliability, the fine fibers are in the form of the bundled aggregates or the group of the bundled aggregates, particularly, the bundled aggregates derived
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