The shortest lag time for hydrogen production was obtained for using ultrasonication pretreated sludge (3 h), while the longest one was obtained from thermal (sterilization)pretreated sludge (15 h).
超声波处理污泥产氢延迟时间最短(3 h);热处理(灭菌)污泥最长(15 h)。
参考来源 - 污水厂剩余污泥水解及其厌氧发酵产氢技术研究·2,447,543篇论文数据，部分数据来源于NoteExpress
The unpredictability of global demand and the lag time it takes to add more cows to a herd to meet demand can result in events like the recent cheese surplus.
全球需求的不可预测性，以及为了满足需求而增加更多奶牛所需的滞后时间，可能会导致像近期奶酪过剩等事件的发生。
Forget the lag time of email or waiting for a call back.
不再需要无止境地等待电子邮件或者是电话回复。
There's a lag time, so it'll flicker all over the place.
由于存在时间的滞后，它的颜色会闪烁不停。
"Its really because of what Bill and I have seen thats been possible the amazing life-saving advances of this technology of vaccine and the success of the GAVI Alliance and what theyve really done the last 10 years, She says there used to be much lag time between the time a vaccine appeared in the U.S.or Europe and the when they became available in poor countries.
VOA: standard.2010.01.29
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