Coal can heat up on its own, and eventually catch fire and burn, if there is a continuous oxygen supply.
煤能够自己提高温度,在有持续的氧气供给的情况下就会起火燃烧。
2
To achieve similarity in ice accretion, it is necessary for the scale test to simulate the geometry, the flow field, the drop trajectories, the total water catch and the heat transfer.