节省 发表于 2025-3-23 11:32:11
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Electrical Properties10.−10. ohm. cm.), and conductors (σ > 10. ohm. cm.). The electrical conductivity is the reciprocal of the electrical resistance. Since electrical resistance is measured in ohms, the unit of conductivity is often written as mho instead of ohm. in American scientific literature.GORGE 发表于 2025-3-23 18:18:45
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astronomical publications throughout the world. It is prepared under the auspices of the International Astronomical Union (according to aresolution adopted at the 14th General Assembly in 1970). Astronomy and Astrophysics Abstracts airns to present a comprehensive documentation of literature in all真实的人 发表于 2025-3-24 02:55:24
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Hans-Georg Eliasndexing of astronomical publications throughout the world. It is prepared under the auspices of the International Astronomical Union (according to a resolution adopted at the 14th General Assembly in 1970). Astronomy and Astrophysics Abstracts aims to present a comprehensive documentation of literat可转变 发表于 2025-3-25 00:07:00
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