... 的 4次方是 The fourth power of 2 i ... 不可压缩的流体 incompressible fluid 不（可）凝性的；不可压缩的 incoagulable ...
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对于不可压缩的流体来说，流管中的质量通量和体积通量都是恒定不变的。
For incompressible fluids, both the mass flux and the volume flux are constant in a tube of flow.
在流体不可压缩的假设前提下，将流体在SK型静态混合器中的螺旋形运动分解成轴向直线运动和环向旋转运动。
Under the precondition of incompressible flow, fluid spiral motion in SK static mixer tube was resolved into axial beeline motion and circumferential rotation motion.
稳态热流和不可压缩流体的流动可相比拟。
Steady-state heat flow is comparable to the flow of an incompressible fluid.
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