infection
发表于 2025-3-21 19:58:23
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陈腐的人
发表于 2025-3-21 21:37:51
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Biguanides
发表于 2025-3-22 02:14:45
Transmission Lines,ounded and unguided wave in the sense that the electric field exists in all space and the electromagnetic energy spreads over the whole space. While an unbounded and unguided wave may be useful for broadcasting radio and TV signals, it is inefficient when used for point-to-point transmission of electromagnetic power or information.
变化
发表于 2025-3-22 06:17:34
Waveguides,ossy owing to the skin effect in the conductors with a finite conductivity. Alternatively, waveguides can provide a much more efficient way of transmitting electromagnetic signals with the frequency in those bands.
乐章
发表于 2025-3-22 12:09:19
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语源学
发表于 2025-3-22 14:57:23
Electrostatics,e boiled down to the divergence and the curl of the electric field. They are two fundamental relations in the sense that they allow us to uniquely determine a static electric field in a given region of space according to Helmholtz’s theorem.
为现场
发表于 2025-3-22 17:27:46
Vector Algebra and Coordinate Systems, quantities such as electric and magnetic field intensities, rules of operations such as vector algebra and coordinate systems, and fundamental laws such as Coulomb’s law and Maxwell’s equations. The first two chapters of the text discuss the rules of operation, including vector algebra, coordinates systems, and vector calculus.
crease
发表于 2025-3-22 23:42:51
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collateral
发表于 2025-3-23 04:04:43
Textbook 2013 introduced by starting with clear definitions of position, distance, and base vectors. The symmetries of typical configurations are discussed in detail, including cylindrical, spherical, translational, and two-fold rotational symmetries. To avoid serious confusion between symbols with two indices,
rectocele
发表于 2025-3-23 06:23:55
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