... step roller 梯级滚轮 step roller rail 梯级滚轮导靴 step roller track 梯级导轨 ...
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step roller guide rail 梯级导轨
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The guide rail of girder applies step structure, selects imported heavy-load roller guide rail support, with strong rigidity, good orientation precision and good dynamic feature;
横梁导轨采用阶梯式结构，选用进口重载滚柱导轨支撑，刚性强，定位精度好，动态特性佳；
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