用卤化银多晶光纤制成在关节式导光臂上使用的卤化银光纤手术刀头。 手术刀头由耦合器、光纤连接器、柔性金属管、聚焦透镜座等组成。
As a means for CO 2 laser beam, the handpiece for articulated arms was consisted of couple, fiber connecter, flexible metallic tube, lens.
聚乙烯管材具有许多突出的优点，但这类管道与金属管道相比，其刚度普遍偏小，属于柔性管，在承受上部填土荷载及车辆荷载时，变形相对较大。
Buried polyethylene pipeline usually have a deformation when bearing the weight of soil or vehicle due to its less rigidity compared with metal pipeline.
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