TA的每日心情 | 开心 2021-4-25 10:41 |
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签到天数: 34 天 [LV.5]常住居民I
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美标回潮率里面改性腈纶有三个回潮率,下面解释的三个类别不知道怎么区分,求问各位大佬们。( F1 d( l. t8 |( s- A, M+ X
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Class III modacrylic fifibers include such fifibers as Verel modacrylic fiber. (3.0%)
8 d2 R% }& q' [/ V) bClass II includes such fifibers as SEF modacrylic fiber. (2.0%)" ?: G$ G) p; M# e2 {
Class I modacrylic fifibers includes all other modacrylic fibers.(0.4%)
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- p# L; E, M( L. `0 y. D- d不明白Verel modacrylic和SEF modacrylic fifiber的区分,平时选用回潮率一般是那个类别比较多呀。3 [ S3 G5 X& ] ?6 j9 a) P; K' D
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