碳黑：在缺乏空气的情况下，燃烧天然气或油产生的一种细面极黑的颜料。
Carbon black: a fine, intensely black pigment obtained by burning natural gas or oil with restricted air supply.
相反，TrES - 2b的大气层由气态钠、钾和三氧化钛这些可以吸收光线的化学物质组成，不过这也并不能为该行星极黑提供解释。
Instead, it has an atmosphere made up of chemicals such as vaporized sodium, potassium and gaseous titanium oxide, which absorb light, but that still does not explain the planet's extreme blackness.
本研究中PVDF粘结剂的添加量在7一10%，乙炔黑导电剂的添加量在8%左右，正极极片的性能最佳。
When the amount of PVDF and acetylene black is 7~10% and 8%, the positive plate obtained possesses optimum properties in our studies.
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