Screw drivers various sizes 各种规格螺丝刀
Main products are drill and screw, which almost cover all the sizes and configurations.
主要产品是钻头和螺杆，我们提供几乎所有型号和结构。
The limitation diagram of key structural elements in design of screw-press for various materials and sizes is given through the data investigation of die forging on screw press.
本文通过对作者所在单位的螺旋压力机上模锻件的数据调查，给出了设计所需的各种材料和尺寸的结构要素极限图表。
Since conventional screw classifiers have a lower efficiency, it is difficult for them to control their product sizes, affecting directly ball mill's throughput capacity and final separation results.
由于传统螺旋分级机的分级效率较低，分级产品的粒度难以控制，从而直接影响球磨机的处理量和最终的选别指标。
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