受热后发生不可逆化学反应，当再次受热不会成为液态的粉末涂料。
A powder coating designed to undergo an irreversible chemical change during heating and will not revert to the liquid stage when reheated.
本文直接利用双膜模型图计算伴有飞速不可逆化学反应的吸收速度。
This paper deals with the direct use of the two-film model graph to compute the rate of absorption accompanied by infinitely rapid irreversible chemical reaction.
把由刘维方程推得的BBGKY方程用于多元系，可导出不可逆化学反应扩散方程。
Applying BBGKY equation obtained from Liouville's equation to a system with many components, the irreversible chemical reaction-diffusion equation can be deduced.
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