轻浮女
发表于 2025-3-30 09:06:46
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词汇记忆方法
发表于 2025-3-30 13:50:53
An Investigation of Velocity-Dependent Friction in Wheel-Rail Rolling Contactt. This oscillation is increasingly unstable with increasing creep. The stick-slip behaviour at the trailing edge leads to sudden changes in the tangential stress distribution in the stick zone, including intermittent slip at the leading edge of the contact.
ironic
发表于 2025-3-30 18:50:42
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orient
发表于 2025-3-30 21:01:34
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过份艳丽
发表于 2025-3-31 02:21:14
Development of Rail Noise Isolating Material (RNIM)and the outer one vibration-damped steel. An impact test executed in a laboratory and some noise measurements executed on commercial lines have verified that RNIM is effective in reducing rolling noise.
Evolve
发表于 2025-3-31 05:58:52
Modelling and Performance Analysis of Rail Vibration Absorber by FE and BE Methodsantly reduced in the frequency range 300-1000 Hz. The noise reduction calculated by the finite element model is less than that of the beam-spring model in the frequency region of 400-—1000 Hz due to the transversal rotation of the absorber. The rail-radiated noise can be reduced by about 7.1 dB(A) using the rail absorber.
痛恨
发表于 2025-3-31 09:25:15
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人充满活力
发表于 2025-3-31 14:33:18
Minisymposium: Advanced Numerical Methods for Hyperbolic Problemsic systems are involved in the description of many physical problems, ranging from classical applications in aerodynamics to shallow water models for the simulation of waves in lakes and rivers, from combustion problems to hydrodynamical models of semiconductors, to mention just a few examples. Beca
Morphine
发表于 2025-3-31 20:28:17
Transporting substances to cells,, but just taking in the fuel is not enough. Oxygen is needed to react with the fuel, which is mainly glucose, in order to release the energy. This important process is called respiration. (As the process uses oxygen it is more correctly called aerobic respiration.) Your cells are respiring as you s
试验
发表于 2025-3-31 23:12:40
Steuervermeidung in Deutschland, more uncommon masses which can arise in the liver and their management. The rare adult and pediatric liver masses can mimic the more commonly encountered liver masses clinically as well as radiologically. A brief review of the literature regarding their presentation, current diagnostic approach, and treatment is presented.