这种沥青大都经过天然蒸发、氧化，一般已不含有任何毒素。
The asphalt mostly through the natural evaporation and oxidation, generally do not contain any poison.
高温煤沥青炭的抗氧化性能要好于浸渍剂沥青炭；
The oxidation resistance of high temperature pitch carbon show well.
高温煤沥青炭的抗氧化性能要好于浸渍剂沥青炭；
The oxidation resistance of high temperature pitch carbon show well.
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