analgesic
发表于 2025-3-21 16:04:25
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HILAR
发表于 2025-3-21 22:35:14
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相一致
发表于 2025-3-22 02:07:07
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卡死偷电
发表于 2025-3-22 08:21:04
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NATAL
发表于 2025-3-22 11:27:47
Some Electrical Circuit Considerationse represented by an admittance Y and eliminated from the diagram by means of the relation ., so that we may consider the diagram in Fig. 25 instead of the one in Fig. 24. Thus it is clear that our formula for surface charge has effectively determined the admittance of the crystal, which, in that case, was a passive element.
物种起源
发表于 2025-3-22 14:47:52
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召集
发表于 2025-3-22 19:32:14
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SHRIK
发表于 2025-3-22 23:27:33
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河流
发表于 2025-3-23 03:52:21
The Linear Theory of Piezoelectricityate of increase of energy (kinetic plus internal) is equal to the rate at which work is done by the surface tractions acting across . less the flux of electric energy outward across .. Thus we have . as the equation of the conservation of energy. Basically, this equation postulates the existence of
Cholagogue
发表于 2025-3-23 05:46:23
Hamilton’s Principleich is called the variation of .. Note that δf differs fundamentally from ., which is defined as the difference in the value of the function . at two neighboring points x. and x.. In taking the variation, the functional form is varied and the position is held fixed. In taking the differential, the p