在低浓度时，酶活性急剧下降，随着毒物浓度的增加逐渐趋于平缓。
At low concentrations, enzyme activity declined sharply, leveled off gradually with the increasing of toxic concentration.
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.
如果希望某种技术在商业利用方面切实可行，首先在物料的预处理方面要求所得到的中间产品必须是容易发酵的糖份，产量高，浓度也较高，而且技术的实施成本还不能过高，还有生产过程中更不能使用有毒物质，不可以耗费太多能源，最后，所生产出来的草料油在价格方面必须能够与传统汽油一争高下。
They should not use toxic materials or require too much energy input to work. They must also be able to produce grassoline at a price that can compete with gasoline.
为应对细胞污染中出现的变异，有毒物质的浓度是逐步增加的，以此保证筛选力度的稳定。
In response to the appearance of such variants in the cell population the concentration of the toxic chemical in the growth medium is increased, thus keeping the selection pressure constant.
结论用HA230树脂吸附剂进行血液的灌流吸附，能清除大部分毒物，迅速降低血中甲胺磷浓度。对抢救重度甲胺磷中毒的危重病人有重要价值。
Conclusion the poisons mostly were removed out from blood after poisons absorption through HA230 resin hemoperfusion and the concentration of methamidophos in blood was reduced rapidly.
为分析泄漏后毒物的浓度在时间和空间上的变化规律，建立了二维渗流方程，开发了二维渗流事故后果分析软件。
To analyze the concentration variety with time and the dispersing distance of the seeped poisonous liquid, the planar seepage equation is built and the seepage consequence software is developed.
因此，我们的数据提供了这些有毒物质的实际和准确浓度，这将有助于未来进行更多的相关研究。
Hence our data which provide the actual and precise concentrations of these toxicants will help in the design of more relevant studies in the future.
两种农药对两种微藻产生毒物刺激效应的作用浓度存在差异。
There were significant concentrations and timing differences in the hormesis induced by organophosphorus pesticides in microalgae.
两种农药对两种微藻产生毒物刺激效应的作用浓度存在差异。
There were significant concentrations and timing differences in the hormesis induced by organophosphorus pesticides in microalgae.
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