In the experiment of determination of flow resistance of single phase, one of the experiments of chemical theory, there were two methods to determine the pressure drop.
在化工原理实验单相流体阻力测定实验中，压差的测定方法一般有两种。
2
Based on the nonlinear motion theory and the radiated energy method, two methods for calculating the resistance increase of planing boats in irregular waves are presented.
Based on the theory of two-phase flow, the mechanism of the condenser's steam resistance which is influenced by the steam velocity field at the condenser's throat outlet was analyzed.