To compare the level of friction resistance (fr) of different design self-ligating brackets using various bracket-wire combination in dry state during orthodontic phase of leveling and aligning.

探讨在干燥条件下，在牙齿排齐整平阶段应用不同的自锁托槽与不同的镍钛圆丝组合所产生的滑动阻力。

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This product is ideal for aligning machine tools, leveling surface plates, adjusting long production equipment, supporting heavy machinery, and much more.

产品主要用于对准机械工具，调平水准面板，长生产设备，支撑重型机械等。是一款您理想的选择材料。

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