# Dictionary:Q(Quality)/zh-hans: Revision history

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#### 1 March 2019

• 15:2115:21, 1 March 2019‎ ‎ 2,196 bytes −55 Created page with "6. 参见Q-type section。"
• 15:2115:21, 1 March 2019‎ ‎ 2,251 bytes −19 Created page with "5. 科尼斯贝格比（参见 Koenigsberger ratio)。"
• 15:2115:21, 1 March 2019‎ ‎ 2,270 bytes −9 Created page with "4. 拉夫波的标志（参见Love waves)。"
• 15:2115:21, 1 March 2019‎ ‎ 2,279 bytes −77 Created page with "3. 描述滤波器锐度的项，中点频率与通频带宽度的比值（一般在3dB）。"
• 15:2015:20, 1 March 2019‎ ‎ 2,356 bytes −28 Created page with "2. 电路的阻抗和电阻的比值。"
• 15:1915:19, 1 March 2019‎ ‎ 2,384 bytes −321 Created page with "这里x是传播距离，δ是相邻两个周期振幅比的自然对数。上边的表达式将Q与谐振条件的锐度联系起来。fr 是谐振频率，Δf 是使振幅..."
• 15:1815:18, 1 March 2019‎ ‎ 2,705 bytes −290 Created page with "式中V、f、λ和T分别是速度、频率、波长和周期。吸收系数α是振幅因吸收而随距离指数衰减的项。通常平面谐波的振幅可写成："
• 15:1815:18, 1 March 2019‎ ‎ 2,995 bytes +46 No edit summary
• 15:1715:17, 1 March 2019‎ ‎ 2,949 bytes −197 Created page with "1. 品质因子，2π乘以一个周期内最大能量和耗散能量的比值；2π乘以储存功率和耗散功率的比值。岩石的Q值范围为50到300。"
• curprev 15:1715:17, 1 March 2019‎ ‎ 3,146 bytes +3,146 Created page with "品质因子"