The fluid mechanics equations of one-dimensional incompressible unsteady flow are adopted in whole low-speed turbo-compression system.
本文将一维非定常不可压流体力学方程组，应用于整个低速透平压缩机系统。
2
The threshold pressure gradient of low permeability sandstone was studied experimentally by measuring the pressure attenuation in an unsteady seepage flow.
为了研究低渗透砂岩的启动压力梯度，设计了一种非稳态渗流中测量压力的试验方法。
3
As a result of low heating value and unsteady component, ignition and combustion of Municipal Solid Waste (MSW) are difficult using conventional methods.