全球定位系统(GPS)是精密的卫星导航定位系统。
Global positioning system (GPS) is a precise, new-generation, satellite-based positioning system.
他们利用了一些精密仪器和技术，例如高精度全球定位系统和原子钟，将测量的中微子运动距离精确至20厘米，运动时间精确至10纳秒(1纳秒即十亿分之一秒)。
They use fancy kit like high-precision GPS and atomic clocks to measure the distance the neutrinos travel to within 20cm and their time of flight to within ten nanoseconds (billionths of a second).
他们利用了一些精密仪器和技术，例如高精度全球定位系统和原子钟，将测量的中微子运动距离精确至20厘米，运动时间精确至10纳秒(1纳秒即十亿分之一秒)。
They use fancy kit like high-precision GPS and atomic clocks to measure the distance the neutrinos travel to within 20cm and their time of flight to within ten nanoseconds (billionths of a second).
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