It was chosen as a central reference point for Mars' geographical coordinate system.

它被选为一个火星的地理坐标系统的中心参考点。

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Results By using ICRU dose reference point (the central point of target) as theunitary dose, 95% dose line could be surrounded above 95% of the PTV.

结果：以ICRU剂量参考点（靶中心点剂量）剂量归一，95%剂量线均能包绕95%以上的PTV。

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Results R(r) wave amplitude with the right forehead as the reference point was significantly larger than that with the central terminal as the reference point (P<0.05).

结果 以右前额为参比点记录的心电图R（r）波振幅比以中心电端为参比点的心电图R（r）波振幅大，具显著性差异（P<0.05）。

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In Switzerland, which like the U.K. isn't part of the euro zone, the central bank has used the euro as its external reference point in its efforts to keep the Swiss franc's value stable.

WSJ: Banks Prep for Life After Euro