This time, instead of using charred paper, he took several strands of cotton, twisted these together into the shape of hairpin, and charred, or carbonized, this filament in an oven.
这回他不用烧焦的纸，而代之以几股棉线。他把几股棉线搓在一起，呈发夹状，然后把已搓成的灯丝放在炉内烧焦，也就是使之碳化。
The method for computing the thermochemistry Ablation parameters of charred materials in ionized air environment is given in this paper.
本文给出了电离空气环境中碳化材料热化学烧蚀参数的计算方法。
The paper is then charred by a lamp or candle and the sewn pattern outline removed.
拿到灯烛上用烟薰烤，烤黑，把剪纸图形取下。
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