退变质过程以黄铁矿变斑晶生长、矿石糜棱岩的形成、二次退火和化学再活化为特征。

Retrograde metamorphism at Hongtoushan is characterized by porphyroblastic growth of pyrite, formation of ore mylonite, secondary annealing and chemical remobilization.

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磁芯经过二次退火后，由于封装胶发生膨胀使得被封装的磁芯电感值严重下降，软磁性能下降。

After cores being secondary annealed, expansion of packaging glue happen, which causes that the inductance value of magnetic-cores declined seriously, soft magnetic properties reduced.

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进行第二次退火以便将通过第一次退火的两次热循环形成的富金属硅化物相转化成处于其最低电阻相的金属硅化物(68)相。

A second anneal is performed to convert the metal rich silicide phase formed by the two thermal cycles of the first anneal into a metal silicide (68) phase that is in its lowest resistance phase.

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