密度

• ρ is the mass density of the material.
  为材料的质量密度。
• There is a greater density of household goods .
  家用商品的密度更大了。
• Mercury has a much greater density than water .
  水银的密度比水大得多。
• This wave of excess density is sound .
  这种过剩密度的波就是声波。
• Density exceeded 100 nests per mile .
  丝巢密度超过每英里100巢。
• The density logger consists of a radiation source .
  密度测井仪包括辐射源。
• Densities presumably can be probed by radar .
  利用雷达也许还能探测出密度。
• The population density is evened out .
  种群密度亦趋于均匀化。
• The range of densities of interest is about 3. 5 .
  有用的密度范围为35左右。
• The entropy density is constant ahead of the shock .
  冲击波前方的熵密度是恒定的。