The eutectoid compounds are very slow in forming .
共析物的形成是非常缓慢的。
The eutectoid reactions which can occur are extremely sluggish .
可能发生的共折反应是非常缓慢的。
The results indicated that the irreversible structure change could lead to higher supercooling degree during solidification , and the primary phase and eutectoid phase became finer and more dispersive .