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- The background concentrations of ambient air pollutants were used as evaluation stan-dards. 采用大气污染物浓度的背景值为评价标准。
- atomospheric CO2 background concentration 大气CO2本底浓度
- soil environmental background concentration 土壤环境背景值
- The background concentrations of the analytes in the sample matrix must be determined in a separate aliquot and the measured values in the LFM corrected for background concentrations. 在样品基质中分析物的背景值能够从一份独立的样品和LFM的检测值的修正来确定。
- He has a strong political background. 他有强大的政治背景。
- That incessant background music gets on my nerves. 那没完没了的背景音乐令我非常烦恼!
- Keywords PM10;SO 2;background concentration;monitori ng;diffusion modeling; 可吸入颗粒物;二氧化硫;背景浓度;监测数据;扩散模拟;
- He has a working-class background. 他是工人阶级出身。
- Get the fall in the background, will you? 把瀑布拍进背景中去好吗?
- His area of concentration is nuclear physics. 他的专门研究范围是原子物理学。
- A background accompaniment, as for a performer. 伴奏为一个演奏者配音伴奏
- The drug affects one's power(s) of concentration. 这种药影响人精神不能集中。
- She came from a privileged background. 她出身於特权阶层。
- He came from an impoverished background. 他出身贫寒。
- There is a concentration of people in big cities. 大城市人口集中。
- This book gives the background of the Civil War. 这本书叙述了南北战争的背景。
- Other motives may have lurked in the background. 这后面可能隐藏着其它动机。
- He seized every chance to break out of the Nazi concentration camp. 他抓住一切机会从纳粹集中营跑出来。
- He was lurking slyly in the background. 他狡猾地躲在背後活动。
- A state of mental concentration. 专心致志,全神贯注全神贯注的状态