Control group was 49 patients undergone reduction with single nail-grooved tail steel plate and posterolateral fusion.
行单钉-沟槽柱翼钢板内固定、后外侧植骨融合术治疗的49例为对照组。
For flat products like plate and strip, plain rolls are used, and grooved rolls are used for the rolling of sections of various shapes.
根据轧制轧材的温度，轧制可分为热轧和冷轧；因而轧制产品也可分为热轧产品和冷轧产品。
For flat products like plate and strip, plain rolls are used, and grooved rolls are used for the rolling of sections of various shapes.
根据轧制轧材的温度，轧制可分为热轧和冷轧；因而轧制产品也可分为热轧产品和冷轧产品。
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