消防队员在市中心站一说，他们看到了一个球的火焰和黑烟，上升至基地。
Firefighters at the downtown Station 1 say they saw a ball of flames and black smoke rise from base.
大可纶纤维具有较好的阻燃性能。在点燃聚酯纤维时，纤维会熔化并在火焰作用下收缩，最终形成球状。冷却后熔球具有较高的硬度。
Dacron polyester fibers have a high resistance to burning. They tend to fuse and shrink away from the flame, forming a bead that is very hard after cooling.
锦纶燃烧时也无火焰，纤维迅速卷缩，熔融成胶状物，冷却后成坚韧的褐色硬球，不易研碎，有淡淡的芹菜气味。
Also, no flame burning polyamide fiber. soak up quickly, melting into colloidal material, after cooling of the tough hard ball into brown, not easily broken, faint celery research smell.
锦纶燃烧时也无火焰，纤维迅速卷缩，熔融成胶状物，冷却后成坚韧的褐色硬球，不易研碎，有淡淡的芹菜气味。
Also, no flame burning polyamide fiber. soak up quickly, melting into colloidal material, after cooling of the tough hard ball into brown, not easily broken, faint celery research smell.
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