单词 | picogram |
释义 | picogramn. Chiefly Science. One million-millionth of a gram. Abbreviated pg. ΘΚΠ the world > matter > chemistry > units or measurements > [noun] > units of weight picogram1951 1951 Nature 8 Dec. 1008/2 Most microanalytical needs are satisfied by the subunits milligram and microgram. This sequence has now been extended by the nanogram (ng = 10−9 g) and picogram (pg = 10−12 g). 1975 B. L. Williams & K. Wilson Biologist's Guide to Princ. & Techniques Pract. Biochem. iii. 72 It has very high sensitivity and can detect as little as one picogramme of these compounds. 1983 Sci. Amer. June 62/2 The intent was to trap picoplankton: organisms whose wet weight is on the order of a picogram. 1997 Independent 15 May i. 2/4 Dioxin in two-month-old breast-fed babies is estimated to be 170 picogrammes/kg body weight when recommended tolerable intake is 10pg/kg bw. This entry has been updated (OED Third Edition, March 2006; most recently modified version published online March 2022). < n.1951 |
随便看 |
|
英语词典包含1132095条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。