Integrating with experimental device, this paper analyses the lay out of pressure measuring tube in the experiment under the sudden expansion of partial resistance so as to obtain the best effect.
结合实验装置，对突然扩大的局部阻力损失实验中，测压管位置的布设进行分析和研究，以求得最佳的实验效果。
In this paper, by using higher term virial expansion method, we get the expression of partial function for Hardsphere system.
本文利用高阶集团展开方法(三阶)，求出二元系统配分函数的表达式。
We give a simple method of partitioning a true fraction into the partial fraction expansion.
给出了把真分式分解为部分分式之和的一个简便方法。
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