This class of problems usually occur in many scientific and engineering fields.

此类问题时常出现在许多科学与工程的研究领域内。

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This class of problems usually describes the deformations of elastic beams with both fixed points.

这类问题通常描述两端固定的弹性梁的形变。

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There are two kinds of methods for solving this class of problems: the integral minimization approach and the combination minimization approach.

求解方法可分为整体优化解法和组合优化解法两大类。

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That's why there's a lot of emphasis on sharpening your teeth by doing this class of problems.

这就是为什么强调要通过解决这些问题,来提高你的能力

耶鲁公开课 - 基础物理课程节选

So, we are going to specialize to a very limited class of problems in the rest of this class.

在接下来的时间里,我们会专门研究,一类非常有限的问题

耶鲁公开课 - 基础物理课程节选

With two Cleveland Clinic colleagues, Topol co-wrote a 2001 analysis of data on Merck's Vioxx that first suggested a link between this class of painkillers, called cox-2 inhibitors, and heart problems.

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If this means problems for our "big companies" then tough, we need to recreate the class of skilled and responsible workers who, if they choose, can work for larger companies, but whose qualifications and responsibilities are personal ones to their Guilds.

BBC: NEWS | Have Your Say | Should work training start at 13?