Unstable leaf of the horizontally torn meniscus was removed, while the stable one was preserved. In 6 cases, the tear of edge rim was not only reshaped but also insider-out sutured.
水平状撕裂切除不稳定部分，保留并修整稳定部分，半月板边缘撕裂行由内向外缝合6例。
When this polymeric material is torn, exposing it to an intense beam of UV radiation breaks the weak bonds in and around the tear.
当这种聚合物材料被撕裂时，将其暴露在一种强束紫外辐射中切断裂口内部或周围的弱键。
The wash pipe packing of drilling swivel showed wear-and-tear continually in drilling process due to its structural design. The packing assembly was often torn by high pressure mud.
钻井水龙头由于结构设计的原因，冲管盘根在钻井过程中不断磨损，特别是在高压泥浆的作用下，盘根密封常常被破坏。
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