塑料纬纱管物理力学性能是其质量特性的重要指标。
Physical and mechanical properties of a plastic pirn are important indexes of its quality Characteristics.
纱管反光带系返回反光式光电探纬装置的重要组成部分。
Pirn's optical band is a key component of photo-electrical weft feeler of back reflection type.
目前的细纱机，有的可以直接将纱线卷绕在纬管上，而不是卷绕在细纱管上。
There are spinning frames in existence which package filling yarn directly on quills rather than ring tubes.
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