施魔法
发表于 2025-3-28 18:14:06
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Antagonist
发表于 2025-3-28 19:38:57
Toothed Gears, ways of doing this (such as belt drives and friction discs) few provide the positive drive without slip and permit such high torques to be transmitted as the toothed gear. Furthermore, gears adequately lubricated operate at remarkably high efficiencies, over a very wide speed range (limited only b
Glower
发表于 2025-3-29 02:30:54
Kinetics of Machine Elementsf ways; for example, in a reciprocating engine there is the gas pressure on the piston and the load torque on the crankshaft, together with the reactions at the bearing surfaces. These forces can be analysed by the methods of statics if it is assumed that the mass of the engine parts can be neglecte
不吉祥的女人
发表于 2025-3-29 03:29:06
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说不出
发表于 2025-3-29 08:25:18
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物种起源
发表于 2025-3-29 12:27:27
Vibrations of Multi-degree-of-freedom Systemss a natural development from the single-degree-of-freedom systems analysed in the previous chapter, particular attention will be paid to the treatment of two-degree-of-freedom vibrations. The methods developed can then be extended to the multi-degree-of-freedom cases.
Confirm
发表于 2025-3-29 16:47:54
Lateral Vibrations and Whirling Speedssisted of one or more rigid bodies connected by massless elastic elements. Following from this it became relatively straightforward to formulate the equations of motion in terms of the chosen displacement co-ordinates, and to solve for the natural frequencies according to the number of degrees of fr
污秽
发表于 2025-3-29 21:59:06
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gusher
发表于 2025-3-30 02:45:11
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Junction
发表于 2025-3-30 04:23:14
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