Chinese Standard: GB/T 7690.4-2013

Reinforcements—Test method for yarns—Part 4:Determination of stiffness

MOD  ISO 3375:2009

全国玻璃纤维标准化技术委员会(SAC/TC 245)

GB/T 7690的本部分规定了无捻粗纱硬挺度的测定方法。
本方法适用于各类增强材料无捻粗纱，不适用于有捻结构纱。

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