In polymer precise-extrusion, the on-line measured extrusion flux is often the basis to regulate screw-engine rotation or tractor speed to improve product-precision.
聚合物精密挤出加工过程中，通常以在线检测的挤出流量为基准调节主机或牵引机转速等来提高挤出制品精度。
The efficiency of steering pump of port tractor lost very heavy when engine was in high speed.
港口牵引车液压系统中的转向泵在发动机高速状态时的能量损失较大。
Each shifting speed and shifting arrangement are determined for directing the design of a new production of tractor or for the improvement of the design.
本文对拖拉机新产品设计或改进设计时如何合理地确定各档速度和档位排列顺序有一定的指导作用。
There is classmate ask: We why does that speed a car and would not like to pull me this to break tractor?
有同学问：为什么我们那辆奔驰车不愿意拉我这辆破拖拉机呢？
Using this system, the model laboratory table of tractor-trailer train can adjust the real-time speed, which is controlled by computer.
利用本系统可以实现汽车列车模型实验台对计算机控制速度的实时调节。
Using this system, the model laboratory table of tractor-trailer train can adjust the real-time speed, which is controlled by computer.
利用本系统可以实现汽车列车模型实验台对计算机控制速度的实时调节。
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