在鞘翅纵沟纹的念珠状结中有管状开口。
There also were openings of ducts in the nodes of elytral grooves that often contained accumulations of some substance.
在前景突出部分看到的纵向沟纹，被认为是由剪断层(differential shear)以及高速的横向扩散所造成的。
The longitudinal grooves seen in the foreground are thought to be due to differential shear and lateral spreading at high velocities.
由于具有深沟纹大底，这是一款为数不多的既具备长距离缓震，又提供软土、泥路稳定性的越野跑鞋。
This is one of the few trail shoes with enough cushioning to handle long stretches of road and still provide sure footing on loose terrain and mud, thanks to its deep lugs.
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