In nozzle theory, flow is assumed to be one-dimensional.
在喷嘴的理论，流量是假设为一维。
The method, based on the theory of non-symmetric flow in Lavol nozzle, aims first at the Angle of reducing the gas dynamic misalignment, and then at the Angle of efficiency.
这种方法以拉伐尔喷管内非对称流动理论为基础，首先着眼于减少气动偏心，然后考虑效率。
Based on the theory of the phase transition, gas dynamics, this dissertation set up the mechanical model of high speed natural gas flow with phase transition in Laval nozzle.
依据相变理论、气体动力学理论建立了描述有相变喷管中天然气高速流动的数学模型。
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