1. Chemistry that deals with minute quantities of materials, frequently less than one milligram in mass or one milliliter in volume. 
   微量化学研究极小数量物质的化学，通常研究对象质量小于一毫克或体积小于一毫升
2. Zemel says that when calcium levels are low, the body releases a hormone that helps squeeze the most out of every available milligram of the mineral; 
   泽莫尔博士说，当人体中的钙含量偏低时，身体里就会产生一种荷尔蒙，它能帮助肌体最大限度地吸收所摄入的钙。
3. In 2001, the annual averages of SO2, NOX, TSP and CO in urban air decreased to 0.064, 0.127, 0.370 and 2.6 milligram per cubic meter respectively, about 47%, 16%, 2% and 21% down compared with 1998 when the pollution was most serious. 
   2001年，市区大气中二氧化硫(so2)、氮氧化物(nox)、总悬浮颗粒物(tsp)、一氧化碳(co)年日均值分别为0.064、0.127、0.370、2.6毫克/立方米，比"九五"期间大气污染最严重的1998年分别降低了47%、16%、2%和21%。
4. Genius is one percent inspiration and 99 percent perspiration. 
   天才一分来自灵感，九十九分来自勤奋。
5. A5 percent checking account. 
   按5饺±?闹?闭驶?

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• 1. 毫克百分数
  milligram method 毫克法...milligram percent 毫克百分数...millilambda 尘升；毫微升
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