step roller track 梯级导轨
step roller rail 梯级滚轮导靴
by step roller spot welding 步进式滚点焊
roller step bearing 滚柱止推轴承 ; 止推滚柱
escalator step roller 求购自动扶梯一步辊
axis of step roller 梯级主转轮轴
step by step roller 步进轧机
Aid-roller step control system 助卷辊踏步控制系统
The large size diameter of step roller operates minimizes the noise and prolongs the product life.
大直径的梯级滚轮，运行平稳，噪音更小，寿命加长。
The method allows for directly compressing the blend without the need for a granulation step or roller compression.
本方法允许直接压制混合物而不需制粒步骤或辊压。
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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