根据州数据和新闻报道，就燃烧面积而言，最近的野火是加州有史以来最严重的几次野火。
Some recent wildfires are among the biggest ever in California in terms of acreage burned, according to state figures and news reports.
其中一处火灾点已经扩大了其一倍的范围，燃烧面积达一万英亩。
One fire doubled in size and has now burnt over 10,000 acres.
根据装药几何形状，导出了在火箭发动机工作过程中燃烧面积及通道截面积变化规律的计算公式。
The area calculating formulas of burning surface and channel section have been derived by the grain geometry.
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