Using NaSCN as solvent, acrylic fiber was produced by one-step wet spinning process. The effect of spinneret negative draw ratio on fiber formation was discussed.
采用硫氰酸钠为溶剂，湿纺一步法工艺生产腈纶，探讨了喷丝头负拉伸率对纤维成形的影响。
You can escape draw on smoke mask, take with flashlight inside the wardrobe in the room. Put wet towel on your nose at special occasion.
逃生自救时请使用房间衣柜内的防烟面具及消防手电，特殊情况下可以用湿毛巾捂住口鼻自救。
You can escape draw on smoke mask, take with flashlight inside the wardrobe in the room. Put wet towel on your nose at special occasion.
逃生自救时请使用房间衣柜内的防烟面具及消防手电，特殊情况下可以用湿毛巾捂住口鼻自救。
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