固定方法有：前环骨折采用钢板固定；后环骨折分离采用骶骨棒，四孔方形钢板，松质骨螺钉固定。
The methods include posterior ring internal fixation by using sacral bars, four-hole square plates or cancellous screws with anterior ring fixed by plates.
松孔镀铬层应用于受重压的滑动摩擦件及耐热、抗蚀、耐磨零件，如内燃机汽缸内腔、活塞环等。
Loose hole plating chromic layer by weight used in the sliding friction parts and heat resistance, corrosion, wear parts, such as internal combustion engine cylinder lumen, piston rings.
重复步骤(3)通过(6)包装的蓝松年底左右的黄色环，通过饲料和拉孔紧，完成第二阶段。
Repeat steps (3) through (6) to wrap the blue loose end around the yellow loop, feed through the hole and pull tight to complete the second stage.
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