ppbv 中文意思是什麼
ppbv
解釋
按體積計算十億分之一-
Cfc - 11 and cfc - 12 have the highest concentrations of the man - made chlorocarbons, around 0. 27 and 0. 55 ppbv, respectively measured at mauna loa in 1997, fig. 5 6. as indicated in their gwp values, these two gases are strong infrared absorbers
在多種人造的氯氟碳化合物中，以cfc - 11及cfc - 12的濃度最高，分別約為0 . 27及0 . 55ppbv量度于冒納羅亞觀象臺， 1997 ，見圖五和六。 -
The average trend over 1980 to 1990 is about 13 ppbv year part per billion by volume year
1980至1990的平均增長速度是每年13ppbv十億份之一體積。
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