PON
发表于 2025-3-30 10:27:49
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formula
发表于 2025-3-30 13:42:45
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刺穿
发表于 2025-3-30 20:24:07
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进取心
发表于 2025-3-30 21:01:41
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Rinne-Test
发表于 2025-3-31 04:48:03
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有恶臭
发表于 2025-3-31 05:13:33
from Euler‘s first contributions to present topicsThis book describes the historical development of the principle of stationary action from the 17th to the 20th centuries. Reference is made to the most important contributors to this topic, in particular Bernoullis, Leibniz, Euler, Lagrange and Lap