英音
[kɒnsənt'reɪʃnz]

美音 [kɒnsənt'reɪʃnz]

n. 集中( concentration的名词复数 );专心;关注;浓度
concentrations 用法和例句
- In high concentrations , qacs kill bacteria .
- 在较高浓度下,季铵盐化合物能杀灭细菌。
- So do higher concentrations of the protein made by the gene .
- 由这种基因所产生的蛋白质的浓度也会增高。
- As it happens , federal standards for fine-particle concentrations already exist .
- 巧的是,联邦政府对细微颗粒物浓度的标准早已有之。
- Pills now in use contain much lower concentrations of estrogens than older preparations .
- 现在的避孕药所含的雌激素浓度要远低于过去的制剂。
- Lower concentrations can damage engines without having an immediate effect on how well they work .
- 较低浓度的火山灰也能破坏引擎,但不会对其运行状态产生直接影响。