concentration
过去式：
动词过去式: concentrated
更多词形：
形容词: concentrative | 副词: concentratively | 名词: concentrator | 动词过去式: concentrated | 动词过去分词: concentrated | 动词现在分词: concentrating | 动词第三人称单数: concentrates |
单词例句：
His area of concentration is nuclear physics.
他的专门研究范围是原子物理学。
The POWs busted out of that Nazi concentration camp one night.
一天夜里战俘们逃出了那个纳粹集中营。
He spent several months in a Nazi concentration camp before he broke out.
他在纳粹集中营里关了几个月后逃了出来。
The drug may affect your powers of concentration.
这种药可能会影响你的注意力集中。
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。
Check oxygen concentration by a refractometer.
用折射仪测量一下氧气的浓度。
Concentration is essential if you want to do a good job.
如果你想把事情做好,专心是必要的。
Stress and tiredness often result in a lack of concentration.
紧张和疲劳常使人精神不集中。
What is the concentration range of interest?
分析对象的浓度范围?