The inspecting value of sample for asphalt content sampling of asphalt mix is normal distribution.

沥青混合料沥青含量抽样检测的样本检测值服从正态分布。

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By sampling the thickness of skinfolds at selected sites on the body, it is possible to estimate the body's overall fat content.

通过抽样身体特定部位皮肤折叠的厚度，可以估算身体总的脂肪含量。

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Methods: Using cluster sampling, the water fluoride content, depth of well, materials of well as well as quality of blocking soil of FCRWQIP before 1996 in Xinyang were measured.

方法：采取整群抽样办法，对被调查县1996年前的所有改水工程水氟含量、打井深度、井壁结构材料和井周封闭土质进行调查分析。

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The Wall Street Journal is already doing so, of course, but with a different model than the Times: The Journal offers a certain amount of free content for sampling, and its articles are all indexed in Google.

FORBES: Times of London Paywall Paying Off Already!*