ppb level 中文意思是什麼
ppb level
解釋
十億分率水平-
Among the asthmatic chinese children, the level of nitric oxide is about 80 parts per billion ( ppb ) while for normal children it is only 29ppb
結果發現患有哮喘的華人兒童中,一氧化氮的濃度為80ppb ,正常兒童則只有29ppb 。 -
The higher ppb ( 77. 99 % ) was in subp. 2 and lower ( 61. 04 % ) in subp. 5. the ppb ' s order was subp. 2 > subp. l > subp. 4 > subp. 3 > subp. 5. the result revealed higher genetic diversity level in p. sibirica
利用shannon多樣性指數估計5個亞居群的遺傳多樣性,叉毛蓬亞居群內和亞居群間的遺傳多樣性所佔的比例分別為69 . 33和30 . 67 ,遺傳變異大部分存在於亞居群之內。
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