A new method of estimating damp ratio of a underdamped system is presented by calculating area ratio of two contiguous periods, which is applicable to experimentation.

提出了一种适用于实验测量欠阻尼系统阻尼比的方法，即通过计算相邻两个周期波形的面积之比来测定系统的阻尼比。

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Typically, users would be expected to keep this area current themselves, but because it is an important part of calculating Team Load correctly, we'll illustrate it here.

一般来说，用户会期望让这个区域能反映他们当前的真实情况，但是因为它是计算team Load重要的一部分，所以我们将会在这里介绍它。

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The system senses the positions of the fingers and, by calculating the surface area of a finger touching the screen, its relative pressure.

通过计算手指接触到屏幕的面积和相对的压力，这个系统能感应道手指的位置。

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Satellites have long been used to track ice extent (area), but calculating the thickness of the marine floes requires the overflying spacecraft to gauge the difference between the top of the ice surface and the top of the water - a relatively simple calculation then gives the overall volume.

BBC: Launch success for Esa's Cryosat-2 ice mission

One area where JPM fell short was in calculating the income of homeowners accurately.

FORBES: Treasury Singles Out JPMorgan As Worst Mortgage Servicer Under Federal Program

The ranking was determined by calculating the number of job postings per thousand people in each major U.S. metropolitan area.

FORBES: The Easiest and Hardest Cities for Finding a Job