环的破坏主要发生在升温阶段。
The destruction of aromatic ring occurred during heating stage.
定义了热点火温度，将桥丝式电火工品的热点火过程分为升温阶段和爆炸阶段。
Thermal ignition temperature was defined, the thermal ignition process of electric hot wire initiating devices was divided as calefactive phase and explosion phase.
工艺过程为：氮化前的准备工作，氮化过程的准备阶段、升温阶段和降温阶段。
The process comprises: the preparation before nitriding, the preparation period, the temperature-rise period and the temperature-fall period of the nitriding process.
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