随铸块粒度的减小，孕育时间缩短，吸氢越彻底。
With the decrease of the ingot granularity, the incubation period is shorter and more hydrogen is absorbed.
出现沉淀的孕育时间常常需要一分钟或更多的时间。
The incubation time for incipient precipitation is often a minute or more.
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。
Time plays an important role and two characteristic times have been identified: incubation and critical times.
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