Besides, the excess air or excess load will cause flame lift, combustion exacerbation and flame off, and that needs auxiliary flame and flame retention by inactive substance.
这就需要优化燃烧器的结构尺寸，再者，当空气量过多或超负荷下，发生离焰，导致燃烧恶化、火焰熄灭，需要有辅助火焰和钝体稳焰。
Mechanical property, flame retardance and warmth retention property of the product is tested.
测试了产品的力学性能、阻燃性能及保暖性能。
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