Inelasticity
发表于 2025-3-23 10:10:46
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闯入
发表于 2025-3-23 14:05:23
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dissolution
发表于 2025-3-23 19:42:58
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HEW
发表于 2025-3-23 23:50:15
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Hypomania
发表于 2025-3-24 05:50:34
The actuator surface,onfine ourselves to a more restricted definition. We will use the term actuator surface for a two dimensional region in a fluid on which an external force field is concentrated. At this surface we have to admit a possible discontinuity of the pressure or of the tangential component of the velocity field or of both.
adroit
发表于 2025-3-24 07:27:41
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insular
发表于 2025-3-24 12:12:59
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CHART
发表于 2025-3-24 17:51:42
Book 1984eglected with respect to these velocities themselves. Hence it is necessary to evaluate the domain of validity of the results with respect to these two a priori assumptions. Anyhow it seems advisable to have first a good understanding of the linearized non-viscous theory before embarking on complica
打击
发表于 2025-3-24 21:33:23
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失眠症
发表于 2025-3-25 01:49:29
Unsteady propulsion,al unsteady propulsion occurs in the case of the Voith-Schneider propeller (section 4.7), contra rotating propellers, the propulsion wheels of a paddle boat and the sculling by means of an oar. In nature almost all animal propulsion in water or in air is unsteady, the flapping motion of the tail of