Clock timing affects crosstalk because it slightly changes the relative time of arrival of aggressive voltage spikes.

时钟选择影响干扰，因为它仅仅改变电压毛刺到达的相对时间。

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As the computer clock is not accurate enough, the timer card also records time beats from Global Positioning System (GPS). This makes accurate timing of cosmic ray arrival feasible.

同时，由于电脑的内置时钟不够精确，计时器亦会记录来自全球定位系统的报时讯号，以便准确计算宇宙射线的接收时间。

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