The yield point is the stress at which there is an appreciable increase in strain with no increase in stress, with the limitation that, if straining is continued, the stress will again increase.

屈服点是在应变有可观增加，应力没有增加的应力极限，在这个极限下，如果应变继续增加，应力就也会增加。

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We have a problem here, if we're thinking about keeping things at the lowest energy, so there's a lot of ring strain in the system.

我们这里有个问题，如果我们考虑要把能量降到最低，那么系统中应有很多环张力。

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Some samples of the strain in China and Vietnam show its continuing evolution.

在中国和越南的一些菌株样本显示了它的持续进化。

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Each year,scientists work to develop a unique influenza vaccine to protect people against the strain expected in the coming flu season.

VOA: standard.2010.07.21

It was found in strain R, a particular strain of E.coli, and it was the first one found, There's a nomenclature that's evolved for this.

酶被发现于R菌株,大肠杆菌中一种特别的菌株,又是被发现的第一种内切酶,有一种专门为此制定的命名法

耶鲁公开课 - 生物医学工程探索课程节选

So, we have a problem here if we're thinking about keeping things at the lowest energy, so there's a lot of ring strain in the system.

现在有个问题,我们考虑要把能量降到最低，所以环上有许多应力。

麻省理工公开课 - 化学原理课程节选

According to federal prosecutors, from January 2003 until February 2008, Huang was employed as a research scientist at Dow, where in 2005 he became a research leader in strain development related to unique, proprietary organic insecticides marketed worldwide.

FORBES: Chinese Agricultural Researcher Charged Under Economic Espionage Act for Trade Secret Thefts at Dow and Cargilll

One-third of the bacteria in the strain that most commonly causes pneumonia are already resistant to all of the macrolides.

FORBES: Antibiotic Breakthroughs Fall Short

Whether such currents could act as earthquake predictors depends on whether there are changes in the strain on a fault before it slips.

ECONOMIST: Predicting earthquakes