其结果是，在挤压周期开始时铝锭难以被挤压通过模具，铝锭后部的挤压速度必须被降低，以防止挤压出废品。
The result is the aluminum is difficult to push through the die at the beginning of the cycle and the extrusion speed must be reduced at the back of the billet to prevent defects.
很多车削中心都配有杆进给，通过数控技术可以提高螺杆压出机的速度。
Many of these turning centers are equipped with bar feeds which provide the speed of a screw machine with the CNC accuracy.
不同的压力和轴向进给速度可滚压出不同的粗糙度和硬度。
Variation of the pressure and the axial speed results in different roughness and hardening.
因为对于给定的挤压速度和温度条件组出口温度从前部向后部增加，因此低的前端性能是低挤压出口温度的结果。
Since exit temperature increases from front to rear for a given extrusion speed and set of temperature conditions, the low front-end properties are a result of low extrusion exit temperatures.
被压力挤压出的水将会同时流动或流动时期会更长，水运移的路程可以达几百公里，运移的通道则限于窄窄的孔隙空间。而且运移的速度也非常之慢。
The squeezed out water is kept moving for the same time and even longer, and the path of its migration may cover hundreds of kilometers, always within the narrow pore space and at a very low speed.
被压力挤压出的水将会同时流动或流动时期会更长，水运移的路程可以达几百公里，运移的通道则限于窄窄的孔隙空间。而且运移的速度也非常之慢。
The squeezed out water is kept moving for the same time and even longer, and the path of its migration may cover hundreds of kilometers, always within the narrow pore space and at a very low speed.
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