英文字典中文字典


英文字典中文字典51ZiDian.com



中文字典辞典   英文字典 a   b   c   d   e   f   g   h   i   j   k   l   m   n   o   p   q   r   s   t   u   v   w   x   y   z       







请输入英文单字，中文词皆可：


请选择你想看的字典辞典：
单词字典翻译
decibels查看　decibels　在百度字典中的解释百度英翻中〔查看〕
decibels查看　decibels　在Google字典中的解释Google英翻中〔查看〕
decibels查看　decibels　在Yahoo字典中的解释Yahoo英翻中〔查看〕

安装中文字典英文字典查询工具!


中文字典英文字典工具:
选择颜色:
输入中英文单字

































































英文字典中文字典相关资料:


  • Decibel - Wikipedia
    The number of decibels is ten times the number of bels (equivalently, a decibel is one-tenth of a bel) P and P0 must measure the same type of quantity, and have the same units before calculating the ratio
  • Decibel Level Chart: How Loud Are Common Sounds?
    Decibel level chart with dB readings for common sounds, from whisper to jet engine, plus OSHA exposure limits and hearing damage thresholds
  • Decibel (dB) | Definition, Formula, Facts | Britannica
    decibel (dB), unit for expressing the ratio between two physical quantities, usually amounts of acoustic or electric power, or for measuring the relative loudness of sounds One decibel (0 1 bel) equals 10 times the common logarithm of the power ratio
  • What Is a Decibel in Sound and How Is It Measured?
    A decibel (dB) is the unit used to measure how loud a sound is It works on a logarithmic scale, which means it doesn’t go up in equal steps like a ruler Instead, every 10-decibel increase represents a tenfold jump in the actual energy of the sound
  • Decibel Levels Explained: Understanding dB in Audio and Sound
    Understand decibels from the basics Learn what dB SPL, dBFS, and dBu mean, how loudness perception works, and safe listening levels to protect hearing
  • Decibel Levels Explained:What Noise Actually Sounds Like
    Decibels are logarithmic, not linear That’s the single most important thing to understand A 10 dB increase doesn’t mean “a bit louder”, it means 10 times more acoustic energy, and roughly double the perceived loudness to the human ear So the jump from 60 dB to 80 dB isn’t a 33% increase, it’s 100 times the intensity
  • 6. 3: Decibels and sound levels - Physics LibreTexts
    Sound levels for common sounds cover a range of about 130 dB (see chart below) Sound levels for common sounds A quick look at the chart reveals that sound level is very a different thing than sound intensity Every extra 10 dB corresponds to a sound that is ten times more intense than before
  • What Are Decibels, and How Are They Measured? - HowStuffWorks
    Decibels serve as the universal yardstick for measuring sound intensity, capturing the vast range of audible sounds that the human ear can detect From the whisper-quiet rustle of leaves to the roaring blast of a jet engine, this logarithmic scale provides a nuanced way to understand sound levels
  • Decibel Levels Chart: How Loud is Too Loud? | Safe Sound Guide
    Interactive decibel chart showing common sound levels from whispers to jet engines Learn exactly how long you can safely listen at each volume before hearing damage occurs
  • Decibels (dB): The Only 5 Things You (Probably) Need to Know
    Decibels are especially useful when comparing numbers that vary by several orders of magnitude That’s why the decibel is so commonly used to describe acoustical power, electrical power, and sound pressure level





中文字典-英文字典  2005-2009