The utility model has the advantage that the utility model can be folded into a suitcase shape, a sleeve barrel shape and a long strip shape according to the using requirements of different persons.
其优点是本实用新型可随不同人的使用需求折叠成提包形、套筒形、长条形；
Particle shape varies from long strip to fine globosity after milling.
球磨后粉末形状从原来的长条状转变为细小的球状；
The roof shape optimization is one of the important means to control the ground pressure. A long strip of exposed roof surface shape can improve productivity of the stope and ensure mining safety.
优化采场顶板暴露面积形状是控制地压的重要手段之一，采用长条形顶板暴露面，能提高采场生产能力和保证回采的安全性。
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