塑性流动的特殊情况是冷变形,发生在硫化橡胶长时间连续承受低应力时以及金属蠕变时。
Special instances of plastic flow are cold flow, which occurs in vulcanized rubber after low stress has been continuously applied for a long time, and creep of metals.
通过分析典型大时变时滞工业过程的特性,提出了一种新的数字PI I鲁棒调节控制器的设计方法。
A new design method of digital PII robust adjusting controller for a general process control system with large time varying time delay is developed by studying its properties.
你永远说不清她要干什么。她一时一变。
You never know what to expect with her. She's so temperamental.
A lot of people get complacent during normal times and they assume that normal times will go on forever.
风平浪静时人们容易变的自满,他们认为这太平盛世会持续到永久
And when these groups were set in competition against each other, the Eagles versus the Rattlers, the within-group intensity grew.
当这两队小男孩,要与另一队互相竞争时,老鹰对响尾蛇,这种群内感情开始变强烈。
Think of anything else with the density goes down when it freezes, and think about where we would be if that wasn't the case.
想想有没有其他的物质,在降温时密度会变大,再想想如果不是这种情况,我们将会怎么样。
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