在心理学上，邮件是变动间隔强化：我们不知道什么时候有价值的邮件会来，所以要不停的查看。

In psychological terms email is a 'variable-interval reinforcement': we don't know exactly when the good stuff is coming so we have to keep checking.

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你会不停的尝试，因为此时的强化是间隔强化，你并不会抱有很高的期望，因此，你的行为通常会持续相当长的一段时间。

Now you keep on trying and because the reinforcement is intermittent you don't expect it as much and so your behavior will persist across often a huge amount of time.

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分析了脉冲宽度、脉冲间隔、峰值电流、加工时间对强化层厚度的影响，并对强化层的显微硬度和耐磨性进行了分析。

The effects of pulse width, pulse interval, peak current and process time on intensified layer are analyzed. And the micro-hardness and the property of strengthening layer are also analyzed.

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Behaviors last longer if they're reinforced intermittently " and this is known as "the partial reinforcement effect."

间隔强化会使行为持续时间更久,这就是所谓的“部分强化效应“

耶鲁公开课 - 心理学导论课程节选

The difference between ratio is a reward every certain number of times somebody does something.

比率强化意思是,间隔一定比例才给予奖励。

耶鲁公开课 - 心理学导论课程节选

Now you keep on trying and because the reinforcement is intermittent you don't expect it as much and so your behavior will persist across often a huge amount of time.

你会不停的尝试,因为此时的强化是间隔强化,你并不会抱有很高的期望,因此，你的行为,通常会持续相当长的一段时间。

耶鲁公开课 - 心理学导论课程节选