The variation curves of the eutectic growth rates are approximately symmetric for the increase and decrease in the displacement velocity at the same acceleration.
当共晶试样增速和减速的加速度值相同时，实际共晶生长速度的变化过程呈对称的逆曲线。
2
In this paper, according to features displacement-time curves the possibility to use acceleration as a factor of state identification is suggested and testified.