The fission track analyses show that these samples are under the exhumed partial annealing zone and the apparent ages obtained are cooling ages with part mixed ages.
裂变径迹分析显示样品应处于剥露的部分退火带，其表观年龄主体表现为冷却年龄，部分具混合年龄特征。
2
With increasing down-hole temperature, average track lengths also decrease, however, annealing anisotropy of fission tracks in apatite increases.
磷灰石中古裂变径迹的长度也随井温升高而减小，而磷灰石古径迹退火的各向异性却随井温升高而增大。
3
In this paper, we present an algorithm for solving train control problem on a level track with speed limits. The algorithm is based on simulated annealing algorithm and penalty function method.