The interaction between two parallel cracks in rock mass under the combined action of tension and shearing is analyzed by finite element method.
采用有限元法，对岩体在拉剪综合作用下平行双裂纹相互影响的情况进行了计算。
Parallel linear cracks are also observed along the crater wall over the gullies, which could be due to thermal contraction of ice-rich material.
在陨石坑口壁上也发现了并行线一样的裂缝，这可能是由于含冰物质热收缩现象造成的。
Most of these long, linear and very deep cracks trend northeast or northwest and form parallel, often regularly spaced sets.
大部分这些长线行而且很深的裂缝向东北或西北延伸，并形成平行线，而且经常定期地形成一组组间隔。
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