| 1. | Keep the average carbon monoxide concentration level inside the tunnel at all times
控制隧道内一氧化碳的平均浓度 |
| 2. | The forecast program of long - term average concentration of air pollutant and its application
大气污染物长期平均浓度预测程序的编制及应用 |
| 3. | Standard guide for ranked set sampling : efficient estimation of a mean concentration in environmental sampling
分等级抽样的标准指南:环境抽样中平均浓度的有效评估 |
| 4. | Average annual number of phytoplankton reached 2 . 20 107cell / dm3 which was 96 . 4 times more than that in control monitoring station
M湖区3不形态无机氮的平均浓度分别为： nh厂n3 |
| 5. | Mean concentration for complete inhibition of schizont formation ; * * resistance concentration of chloroquine / dihydroartemisinin has no lay down standards
完全抑制裂殖体形成的平均浓度; * *氯喹/双氢青蒿素合剂抗性浓度尚未确定。 |
| 6. | With same total rainfall , runoff lasted longer under the low rainfall intensity than that under the higher one , but the total runoff amount is more under the higher rainfall intensity
农田径流液中氮素的平均浓度和氮素径流累积流失量提高，两者间呈显著正相关。 |
| 7. | Tea leaves contain more caffeine ( 2 . 7 to 4 . 6 percent of the dried green tea leaf ) than does roasted coffee . but the concentration in the beverage averages somewhat less in tea
茶叶含有比焙炒咖啡更多的咖啡因(占干绿茶叶的2 . 7 ~ 4 . 6 % ) ，但在饮料方面，茶中的咖啡因平均浓度却稍低。 |
| 8. | However , there has not been much reduction in the concentrations of pollutants in the general ambient air . taking rsp , its average concentration has been on an increasing trend
相对来说，一般空气中的污染物浓度则没有多大改善，以可吸入悬浮粒子的平均浓度计算，更有上升的趋势。 |
