调查了燃烧条件对燃尽时间和最大燃烧速率的影响。
The effect of combustion conditions on burning-out time and maximum burning rate is researched.
截至8日早6时30分，大火仍在燃烧，事故原因正在调查中。
调查人员现在集中调查洛杉矶北部的一处疑似起火点；大火已经燃烧了大约10天。
Investigators are focusing on an area north of Los Angeles as the possible epicenter of the fire, which has burned for about 10 days.
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