Double rollers crusher is using a pair of opposite rotating round roll, four roll crusher is to use two opposite rotating round roll for crushing homework.
双辊破碎机是利用一对相向转动的圆辊，四辊破碎机则是利用两对相向转动的圆辊进行破碎作业。
In addition, according to the crushing strength and physical, chemical properties of manganese nodule, the testing method for crushing using toothed roll crusher is established.
同时根据锰结核的破碎强度和物理化学特性确定了用齿辊破碎方式进行破碎的实验方法。
The air intake behind the drivers head ACTS like a 'roll bar'. If the car flips over, it is physically the only thing stopping the weight crushing the driver.
驾驶员头部后面的通风口起着防滚保护杆的作用，用以在赛车翻侧时防止重物撞向车手。
The tooth of roll crusher is pointed, used for crushing coal, coke and limestone.
破碎机的齿轮为尖头状，用于碎煤，焦炭和石灰石。
Adopt chain drive and roller-crushing plate feeding structure, which will not hurt the plate while roll press the plate backface;
采用链条传动，对辊式版材输送结构。不伤版面及版背辊压设计；
Adopt chain drive and roller-crushing plate feeding structure, which will not hurt the plate while roll press the plate backface;
采用链条传动，对辊式版材输送结构。不伤版面及版背辊压设计；
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