目前在欧洲和北美一些城市中肺功能减弱现象的增加也与目前测量(或观察到)的二氧化氮的浓度有关。
Reduced lung function growth is also linked to NO2 at concentrations currently measured (or observed) in cities of Europe and North America.
她说，对于铜来说，半数致死浓度lc50(一定时间内受试动物半数死亡的毒物浓度)随温度减弱-这就意味着毒性增加。
For copper, she said, the LC50 (the concentration lethal to half of any given species over a certain time) decreases with temperature - meaning that toxicity increases.
地壳抬升可使油气藏盖层毛细管封闭能力增强，压力和烃浓度封闭能力减弱；
Crust uplift can increase the capillary sealing ability of caprock and decrease the pressure and hydrocarbon concentration of caprock.
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