龟裂纹指老树皮外部的死亡组织缺乏弹力不能增大，随着树干的加粗，受内部压力而开裂产生纵横较深的裂纹，形似乌龟背壳上的纹理，匀称龟裂或龟裂纹。
SEM显示，紧密层和疏松层中均存在大量的龟裂纹。
Many cracks were observed in both layers under higher magnification SEM study.
根据鼓丘龟裂纹可以反演翻浆类型，并判识粘土透镜的位置。
According to tympanites pingo crack, we can identify the type of tympanites and scale and depth of clay lens.
采用上述方式处理的模具经过低温时效后延迟了龟裂纹的出现，采用本发明的技术方案使模具的寿命大为延长。
The mold which is treated by adopting the way delays the emergence of craquelure after low-temperature aging, and by adopting the technical scheme, the service life of the mold is greatly prolonged.
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