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No indications larger than some percentage of the reference back reflection.
不允许有大于参考底面反射的一定百分率的信号。
Indications greater than 3" with back reflection greater than indication level, reject;"
缺陷大于3英寸,并且底波大于缺陷尺寸显示级别时,不合格;
Pirn's optical band is a key component of photo-electrical weft feeler of back reflection type.
纱管反光带系返回反光式光电探纬装置的重要组成部分。
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