1. a logarithmic unit of sound intensity equal to 10 decibels. 
   声音强度对数单位等于分贝。
2. Of, relating to, or being a logarithmic function with a normal distribution. 
   对数正态呈正态分布的对数函数的或与其相关的
3. a logarithmic scale of 1 to 10 used to express the energy released by an earthquake. 
   1级到10级的对数标度，用来表示地震释放的能量。
4. a logarithmic unit of sound intensity; 10 times the logarithm of the ratio of the sound intensity to some reference intensity. 
   声音强度对数单位；等于音强或功率比值的常用对数乘以。
5. Swiss mathematician particularly noted for his full development of integral calculus and for his theories of complex numbers, logarithmic and trigonometric functions, and lunar motion. 
   欧拉，莱奥哈尔德1707－1783瑞士数学家，尤其他对微积分的开创性贡献，以及他的复数、对数、三角函数和月球运动等理论而闻名于世

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• 1. 对数底
  logarithmic amplifier || 对数放大器...logarithmic base || 对数底...logarithmic coordinate || 对数坐标
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