graphy 发表于 2025-3-27 00:05:06
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Paul Weber,Heiner Böttgere one seems to be: a propeller is unsteady when no inertial reference frame exists with respect to which the induced flow is time independent. This however is not appropriate because then nearly all conceivable propulsion systems are unsteady with the only exception probably of the sails of a yachtsigmoid-colon 发表于 2025-3-27 11:22:07
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Paul Weber,Heiner Böttgerte mathematics majors. Although results from this active area of research have appeared in a number of excellent graduate level text books since 1971, material for use at the undergraduate level remains fragmented. The basic ideas are so fundamental, however, that they can be used to unify variousBUOY 发表于 2025-3-27 19:01:43
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oldsmith Julgoldit. Als Formel dieses Minerals ergibt sich Ca.(Fe.Fe.)Fe..Si.O.(OH).(x ~ 0,5). Ersetzt man Fe. durch Al und Fe. durch Mg, so erhält man den häufiger vorkommenden Pumpellyit, jedoch sind auch schon mehrere Mischkristalle aus beiden Endgliedern beschrieben worden. Moore beschreibt außeneurologist 发表于 2025-3-28 08:52:04
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Vertrieb trifft Hirnforschung978-3-658-34241-8Series ISSN 2662-9208 Series E-ISSN 2662-9216