Line segments and arcs are the most common curve style in many engineering fields.

在许多工程应用领域中，直线段和圆弧是使用频率较高的线段元素。

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Periods when the yield curve is inverted (short rates are above long ones) are less common.

收益曲线反转(短期利率高于长期利率)的时候很少出现。

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The problem Diagnostics Lab Toolkit can help shorten that learning curve by letting you experiment with common problem scenarios.

Problem Diagnostics Lab Toolkit可以帮助缩短学习曲线，使您能够体验常见的问题场景。

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This is sometimes known as the Laffer Curve, and this common-sense theory is explained in the following video.

FORBES: Understanding the Laffer Curve

But cheating to get ahead at any cost (particularly at the cost of another classmate if, for example, a test is graded on a curve) and collaborating with classmates for the common good are different ethical animals.

FORBES: Is Teaching Collaboration The Catch-22 Of Education?

Since small deviations are common and large ones are rare, the result of plotting data in this way is a curve shaped somewhat like the cross-section of a bell.

ECONOMIST: Climate change