Thus, if the matching reference blend is made up of 15% nheptane and 85% isooctane, the test sample is rated 85 motor or research octane number, according to the test method used.

这样，依照实验方法，如果匹配的参考混合物由15%的正庚烷和85%异辛烷组成，那么按照所用的实验方法，对比实验样本的辛烷值就是85 。

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The percentage of iso-octane in blend is considered the octane number of the test sample.

混合物中异辛烷的百分比就认为是实验样本的辛烷值。

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Care must be taken in the interpretation of the chi-squared test, since it has low power in the (common) situation of a meta-analysis when trials have small sample size or are few in number.

必须重视对卡方分析结果的解释，因为当试验只有很小的样本量或者数量极小时，通常情况下Meta分析具有较低的把握度。

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If the target slab is deemed suitable, a number of test holes are likely to be drilled - using the rotation as well the percussive action - before a powdered sample is picked up and delivered to Curiosity's onboard laboratories.

BBC: Curiosity Mars rover hammers into rock