| 单词 | Planck's constant |
| 释义 | Planck's constant [`pläŋks ´kän·stǝnt] QUANTUM MECHANICS A fundamental physical constant, the elementary quantum of action; the ratio of the energy of a photon to its frequency, it is equal to 6.626075 ± 0.000004 × 10-34 joule- second. Symbolized h. Also known as quantum of action. |
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