characteristic reaction times 特征反应时间
times characteristic 时代特色
origins characteristic of times 时代根源
retention times and characteristic ion 保留时间和特征离子
retention times and characteristic ions 保留时间和特征离子
Time plays an important role and two characteristic times have been identified: incubation and critical times.
时问起着重要作用,并有两个特征时间已被确认:孕育时间和临界时间。
The belief that we can always start over – that things can always be made better – has been a defining characteristic of the United States and, at times, our greatest strength.
我们的信念在于随时可以重新开始——事情可能总是做的更好——这是美国一个最重要的特征,有时还是我们最大的长处。
This is the characteristic of our times.
这就是我们这个时代的特征了。
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