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Natural logarithm - Wikipedia, the free encyclopedia嘩....以前的浩克也太瘦了吧..!!!! The derivative of the natural logarithm is given by This leads to the Taylor series for ln(1 + x) around 0; also known as the Mercator series (Leonhard Euler nevertheless boldly applied this series to x= -1, in order to show that the harmonic series equal...

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露点 - 维基百科好可憐... 露點(英语:Dew point)或露點溫度(英语:Dew point temperature)是在固定氣壓之下,空氣中所含的氣態水達到飽和而凝結成液態水所需要降至的溫度。在這溫度時,凝結的水飄浮在空中稱為霧、而沾在固體表面上時則稱為露,因而得名露點。 當露點降到 ......

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