本文根据液体在低温状态下，分子运动的特性，提出了低温密封液体的比压计算公式。
Based on the molecular motion characteristics of liquid in low temperature, the paper presents the equations for specific pressure for sealing liquid in low temperature.
分别求出了磁液动密封中磁液和被密封液体的速度分布，特别是磁液作为非牛顿流体运动方程的解，并计算了两相液体界面的速度差。
The motion equations of sealed liquid and magnetic liquid which is considered to be non-Newton fluid in magnetic liquid seal were solved respectively and their speed distributions were got.
在成功合成与被密封液体不相溶的磁流体的基础上，通过合理布置密封装置的磁场和磁路，可以大大延长磁流体用于旋转轴液体密封的寿命。
On the basis of successfully forming a chemically stable interface with the h'quid to be sealed, the life of sealing liquid is considerable extended by properly arranging…
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