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丝棉分为几种应该怎样鉴别

更新时间: 2020-09-23 00:00:00     

1、眼观。丝棉色泽呈乳白,偶有未拣净的薄茧片的为真货;色泽纯白,找不到薄茧片的为假品。

2、手摸。丝棉丝细柔软,极易粘手的为真货;而不粘手的为假品。

3、火烧。丝棉经火烧后,发出烧毛发似的气味,被烧的纤维末端结成一个黑疙瘩,用手一捏粉碎的为真货;而没有烧毛发味,且烧过的纤维末端结的疙瘩很硬,不易捏碎的是假品。

关键词: 分为 应该 怎样 鉴别

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