词汇
发表于 2025-3-30 11:18:23
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确定无疑
发表于 2025-3-30 16:05:59
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KIN
发表于 2025-3-30 19:45:21
Electrical Conduction in Polymers, Ceramics, and Amorphous Materialsics industry, for example as handles for a variety of tools, as coatings of wires, or for casings of electrical equipment. Most polymeric materials have the required insulating properties and have been used for decades for this purpose. It came, therefore, as a surprise when it was discovered that s
palliate
发表于 2025-3-30 22:37:05
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FLACK
发表于 2025-3-31 03:30:04
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needle
发表于 2025-3-31 08:54:18
Quantum Mechanical Treatment of the Optical Propertiesh equations which reproduce the optical spectra of solids reasonably well. Unfortunately, the treatment had one flaw: For calculation and interpretation of the infrared absorption we used the concept that electrons in metals are free; whereas, the absorption bands in the visible and ultraviolet spec
consent
发表于 2025-3-31 11:02:49
Applications absorption and emission spectra are known to be extremely sharp. Thus, absorption and emission energies for atoms can be determined with great accuracy. The same is basically true for molecular spectra. In contrast to this, the optical spectra of solids are rather broad. This stems from the high pa
sleep-spindles
发表于 2025-3-31 14:00:26
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