非织造材料与工程专业英语词汇（U）——非织造论坛整理发布，第一无纺布网！

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非织造材料与工程专业英语词汇（U）——非织造论坛整理发布，第一无纺布网！

U

Unidirectional
Performing best in only one direction; generally applied to nonwovens in which the fabric strength is highly oriented in the direction of web travel through the forming process.

Ultrasonic bonding
The use of high frequency sound to generate localised heat through vibration and thereby cause thermoplastic fibres to bond to one another.

Uv degradable
The ability of a substance to be broken down by the action of the ultraviolet part of the light spectrum so it can be consumed by the environment.

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