| 单词 | Alfvén speed |
| 释义 | Alfvén speed [äl`vān ´spēd] PHYSICS The speed of motion of the Alfvén wave, which is va = B0/√(ρμ), where B0 is the magnetic field strength, ρ the fluid density, and μ the magnetic permeability (in meter-kilogram-second units). |
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